With the relative lack of 5e mechanics to discuss, there is (from my perspective) more of a trend this edition for Enworld discussions to be focused on more general D&D and RPG topics versus character build and rules parsing.
And thank Reorx for it! Those endless rules arguments, and the hard headed pedantry that was usually a big part of them were annoying af! (not just Enworld, I'm a long time D&D message board junkie, lol I've read more than enough of those threads...)
The "build" threads were mostly from after I'd more or less stopped playing (life happened...), and I'm grateful I never got the bellyfull of powergamers and optimizers so many others have! The threads WERE around during my 3E days, I just paid them little attention- I was always about PLAYING the game as the game. Building characters was just something you did so you could play- not the purpose of the game itself.
I think that, in a nutshell, is the source of my grognardism. Later editions of the game seemed to shift focus away from the fantasy mideval swords n sorcery/ epic adventure "thing" that's the heart of what draws me to the game, and more towards a rules heavy, persnickety tactical wargame simulator. Complete with drawn out combats, player turns that were so complicated and took so long, people's attention started to wander- and endless rules arguments.
And, of course, a more video gamey feel, and change just for the sake of it.
Don't get me wrong- I LOVED 3E! Precisely because it went with a YES, you CAN!! model, and a single, unified system-rather than the arbitrary restriction just because; with different mechanics for everything model. It was, more or less, our old homebrew rules- with cool new additions that came from 20+ years of playtesting. It did, however, have it's warts- like the constant rules arguments during combat. (attacks of opportunity seemed to be the worst offender, as in what triggered one)
We missed the vast majority of the things everyone kvetched about, because we played it just like we always did. Not having any players interested in creating uber-characters, or abusing the hell out of the rules helped, too. (I can't remember ANYONE ever using Haste, for example, much less abusing it)
We missed 3.5 and 4E entirely.
Which brings us to 5E. Frankly, I love this edition, too. It hearkens back to the rules lite feel of early D&D, heck it's nearly B/X like, lol. We're JUST getting into actually playing it, so threads discussing a possible 6E are like WHOA, Bubba- not so fast!!
I just want D&D to remain D&D. It's own specific game. Many of the proposed changes I've read people asking for over the years have been akin to wanting D&D to "Be more like XYZ Game" If I wanted that experience, I'd play THAT game. To that end, I believe that a certain amount of grognarding and gatekeeping are necessary to keep the train from jumping the tracks. That way new players can have that same sort of experience we did when first introduced.