In my opinion, the gears have shifted, the VAST majority of folks in the "community" are no longer interested in finding answers, they are here for the pop culture phenomena that is "bigfoot". For that reason, forums full of information and data points are of little interest when youtube other social platforms are spoon feeding them. these kinds of spaces are for the dedicated at this point. what they are dedicated to is another question lol. finding answers? their skepticism ? their belief? I've dropped back over the last 2 years myself due to other projects and other research opportunities that yield quantifiable data. Those other fields feel far more rewarding because i can actually "bring it home" so to speak.
as mentioned by @Scratchy pushing it on a subreddit may help boost registration and activity over here.