It's interesting to dip into this discussion. I guess I do have a dog in the hunt to discuss the MM, as I also have the A5E Monster Book (I support people in the industry a ton). I find it easy to use and reference but I haven't run a game with it yet, so my experience is at a level of "Oh, this looks good!" For the new 5.5E MM, I think someone had a little too much experience with Excel, as all of the creatures have blocks that look like they came from an Excel sheet. And 95% of them aren't used since few monsters have any saves. I find the new stat blocks okay but too blocky.
I'm looking at this discussion as a whole, and it's pretty wild. I did not have "Support for the Pinkertons" on my 2025 BINGO card. What I do find interesting is how quickly we're moving on from the WotC issues of the past couple of years.
But I think the biggest issue for me is how we're moving on from the whole 50th Anniversary in general, so I wonder if support for 5.5E has sort of crested. I know the last season of Stranger Things will be out, but the media blitz for the game seems to have ebbed, other than occasional missteps by WotC. I'm thinking about how soon Project Sigil is going to fully debut and if that will bring in large numbers of new players to the game. I think things might have gone better if it went into use while the hype about the 50th anniversary was going strong.
I hate to say it, but I suspect that 5.5E adjacent games seem to be ebbing as well. I guess I'm trying to see what the next hot thing in gaming is going to be, and not really seeing it. It sounds to me like interest in gaming, in general, is stalling a bit. But I suspect people will disagree with that assessment, and I'd like to disagree with it on my own.