The cancelled user account suggests that this is wasted effort, but here goes.
Used to be I decided what I was supposed to know or didn't. Forgive me if I wasn't 'hip' whenever it was that I was expected to be; I didn't get that particular heads-up. In simpler terms, I feel like I shouldn't have to know these terms at all just to have a conversation about TTRPG or anything else for that matter. People toss around terminology these days as if everyone is supposed to know it right off the bat, but the hard truth is that people invent needless terms to bloat their own importance in the discussion, with the purpose of wielding them as weapons when others either don't know them or use them out of an undisclosed context (see above for an example).
There are undoubtedly and inarguably people who use jargon to exclude or to feel important. Everyone was young once (and some people never grow into well-adjusted social skills), and both TTRPGs and internet discussions are common gateways for people still on that journey. However, that is not the major reason for the existence of hobby-wide fandom-terminology.
It's clear that something has gotten you incredibly riled up. You've come into this discussion hotter than a two-dollar pistol, casting aspersions towards nameless others who have apparently done you some great wrong and generalized it to the community as a whole. It is the equivalent to getting mugged, and then walking into the nearest shop to get the police called and instead throwing a fit and reaming out all the patrons there and badmouthing the entire city in your anger and frustration -- we have no idea what the problem is or what to do to help, and the only abusive behavior we are seeing is coming from you.
Hey, it's certainly easier than actually trying to meet people halfway in a common goal of understanding.
That isn't remotely what you have been doing, or the side you have been taking. You have been team 'hostile, angry, self-declared victim' from the get-go. There has been nothing of accommodation or attempting to find understanding about anything you have presented.
I expect the alphabet soup deluge from governmental institutions, not from a casual discussion about a hobby. In short, I don't give a frog's green ass if you have a secret handshake or an entirely new sign language; the point is, the only thing anyone in any hobby should be expected to know is how to communicate ideas clearly without referring to a specialized glossary. Hope I cleared that up.
We play "D&D," (or "DnD"), which is an "RPG." The game has had acronyms and jargon and unofficial must-be-part-of-the-wider-community-to-have-learned shorthands since the very beginning. I'm not sure why you think a hobby shouldn't have such things. Jargon exists so that people who deal with the subject in depth, regardless of the reason, can have an fruitful discussion. Surgeons, artists, and piercing specialists all need to have terms for the various parts of the external ear you or I will never need to know because they will need to communicate amongst themselves if the point they are making is in regards to the tragus or the scapha* -- and that has nothing to do with whether their interest is professional, government, hobby, or anything else.
*terms I didn't know until two minutes ago when I dreamed up this example.
Lest we forget, the topic of the thread was inviting anyone who felt like they didn't fit in to speak up. I spoke truth on this forum as I would speak to anyone in a spirited discussion, with the bark on. It's replies like yours ("You should know this", etc.) that turn these kinds of discussions into contests.
Again, you are the hero of this discussion in your mind and your mind only. Everyone else sees and abusive individual throwing a fit.
The whole point behind the topic was to chime in with our feelings in response to the question as to whether we felt like we didn't fit in or not. You pretty much took every one of my points out of context so you could throw them back in my face. Bravo. It's replies like yours that exactly illustrate my point. None of what I said was intended as a direct attack or an attack of any kind, and thus your words are not well-taken. They weren't attacks, they were how I felt inside. WTF is wrong with you people, anyway?
If people are taking your comments out of context, it is unclear to everyone else. You have the opportunity to explain how it is the case. Otherwise, no, it does not seem like your point is being illustrated. What is wrong with the rest of the people here (if anything) is only that they are not telepathic and thus aren't privy to whatever has gotten you so preemptively angry.
So what gives? Was this just planting your flag out there and saying "I'm a grognard and proud of it?"
For the benefit of the person to whom you are responding, I want to chime in that this is exactly what it looks like, with a side order of gnashing their teeth at the perceived slights of a wider community that has wronged them by making them feel excluded.
