5e is great for letting grogs and newbs sit down together at the table of gaming love. I can't see why WoTC would want to throw that away. IME most newbies see grogs as a valuable resource for learning how to play, not some kind of a threat.
As Umbran says, grogs are less than 10% of players. In 2024 or whenever they're only going to be a smaller proportion.
If you look at the development of D&D Next, basically 90% of opinions followed were grogpinions. Even where the majority opinion appeared to be that something ungroggy was good (even among grogs!), WotC
generally seems to have gone "Nah, grog it!" or "Well opinion is split so let's go with 3E-style!" (which is essentially grog-ish, because 3E intentionally recalled 1E, not 2E). This made sense because the main goal was to regain market share when they'd lost a lot of it to a game that was essentially refusing to move forwards (rather moving slightly sideways).
It would make no sense to do that with 6E. We've established that grogs are a tiny percentage of the market. So you want to target the majority - which will be younger players - the odds are good that, whatever you do, most/all of the grogs will stay with you anyway, so there's that.
I mean, to drive the grogs away with 4E, it took huge effort - they had to have a system totally incompatible with all the 3.XE content people had spent literally hundreds or thousands of dollars on, to make dubious comments which made it sound like 4E was an MMO-in-waiting (not the intended meaning but w/e), and run a marketing campaign so ridiculous and outright insulting, it seemed like a "bit" from The Simpsons or something, which
literally had a snooty-sounding guy with a European accent basically saying "Your old D&D which you spent decades playing is dumb trash for babies". And this perfect storm also needed them to both have created the OGL, allowing a company to clone 3.XE, aaaaaand for 4E to not have the OGL, but the GSL, which made it nigh-impossible to create good 3PP material for 4E, so PF was there with open arms.
That won't happen again.
Most likely 6E will be to 5E as 2E was to 1E, like, semi-compatible, with most of the rules changes being stuff to make it more accessible or to change stuff so it makes more sense, and I'm sure they'll do at least one thing that makes a whole bunch of grogs reel in horror.
Maybe you missed my point about grogs helping newbs get into the game. A lot of new players are intimidated at the prospect of GMing, especially, when they've not played before.
There's basically little/no evidence that this is a meaningful number of players though, and further, as I noted, it's not like the grogs are going to quit if they're not listened to - what are they going to do, go play PF2? I mean a lot of us quite like 5E, we're likely to quite like most of 6E.
