It’s not a great analogy as you’ve said the room was crowded. These people aren’t doing it on purpose, and in fact can’t avoid it unless the situation changes and they will be standing on each others feet as well.
A crowded room, in this metaphor, is societal norms. Everyone expects that certain words are OK, when surprise, it turns out they're
not.
However you are the only person complaining about a situation everyone finds themselves in. Everyone else is apologetic but getting on with it without blaming the other people.
But is everyone getting on with it equally well the tenth, fiftieth, or hundredth time it happens?
And no, Hussar is not the only person complaining about this situation. Many, many people have complained about this. There was a note in the Fate System book, from
2013, about how
race was a poor word for being both inaccurate and problematic, but they were using it because it was a commonly-understood term in RPGs (and the race examples they gave were elves and orcs, so you know they meant D&D-type RPGs).
Worse it equates words to actual physical pain, they aren’t the same.
Actually, words
do hurt--insults and verbal cruelties have long-lasting affects on the mind. I say this as someone who is still messed up from grade school bullying thirty years ago.
New words don't help if they are trying to convey the same concepts, kind of shown by people getting upset over replacing race with species. And often people just go on to start taking offence at the new words because the sentiment is the same.
Race has particular connotations that
species doesn't, and is also, quite frankly, not a useful word.
And people here aren't so much taking offense with the term species as with the "just one drop" method of half-whatevers that One is trying to do, when there are other, more inclusive ways of letting people play people of mixed ancestry. If they don't want to do what Level Up did, with a heritage/gift divide, they could simply asterisk a trait or two in each species' statblock, and you can swap one species' asterisked trait with another one.