I broadly agree with OP, and attribute that mostly to becoming more knowledgeable myself so fewer financial topics are still of interest. It's possible censorship, self or otherwise, has contributed but I have not be watching closely enough to judge that, but it would be my second guess as an explanation.
More specifically, and in no particular order, in reply to others' comments in the thread:
I found jbolden's comments
interesting, and while I am not decided on his views nor entirely enamored of his posting style, I respected his ideas and enjoyed reading his posts. I hope to hear from him again.
I miss sscritic as well, and he was very helpful to me and exceedingly generous with many others. It appears
his departure was a casualty of the lack of a rating system that requires bad and inaccurate advice to be firmly called out as such, and which makes experts such as himself appear to be "the bad guy" when they are just trying to prevent other less knowledgeable readers (most of us) from mistaking or following clearly bad advice as equally valid.
Old Meph, RIP,
and some of the other experts are also missed. This wouldn't be the first time such losses were regretted:
I did very much enjoy grayfox's BitCoin education thread
. A timely topic for something we no doubt will be hearing more about, both as a technology and as an investment.
I like polls and think their absence is a loss.
I was disappointed to see the last ACA healthcare thread
locked, but have not been brave enough to start another. There are many increasing financial impacts and complexities to getting healthcare that are especially relevant to potential early retirees such as we have here at Bogleheads, and health care/insurance is a major factor in retirement planning. I hoped there would be a chance to discuss these issues here.