I've noticed a similar trend.
I had been a MM on here for several years. If memory serves me correctly, for almost as long as I've been apart of this forum. I've noticed that MMs that had been MMs for as long (if not longer) then I have been are no longer so.
I'm not necessarily the best with change with regard to some things, I do try my best though. Some changes on here, I've liked, some not so much. While mentioning my concerns, they weren't either directly answered or answered in a way that helped eased my concerns of continuing my investment. I can understand to a degree as to that, due to I'm willing to bet that there are some on here that don't like changed regardless of good or bad and that creates a lot of "noise" to shift through. Although to be honest, if you have paying members (and the higher paying MM members) voice some concerns, I would think that it would be best to at least handle those concerns, but that's just me.
I get the feeling that the new ownership isn't along the lines of a "hands on" owner and that's fine as long as one can get people to help out and take that responsibility. It just seems like the owner wants what my dad would call "mailbox money". Just a regular dividend for the investment with minimal to no extraneous work on their end (they did do work, but at a certain point they want it to stop and that's it, just let things come on in). That's me speculating though, that may not be the case, just the filling that I get and a concern that I would have as a MM paying member.
As to regular users migrating off the forum, that could be natural migration just to something else or they may not be happy with how things turned out.
With regard to grammar, I do believe some effort should be put forth when trying to ask for help. I don't expect Pulitzer material, but some effort put forth for proper grammar usage. I've been guilty of the occasional homophone here and there, I think most of us can muddle through that. But just a simple attempt would be better. After all, if one doesn't put in the effort to present their question in the best manner, can one really expect to have the best responses forthcoming?