Yeah, it's stagnated a bit. I've been into this subject close around 40 years now... watched and read most of what's available, probably multiple times by now.
I don't see much need anymore in watching the ones in it for money like tv shows, books etc since imo, BF is worth more as a mystery.
If the mystery is solved after the 1st flurry of attention then it's no big deal and there goes the cash stream/ trickle from viewers/ readers after the "new" wears off.
Kind of like when the" gubmint" acknowledged UFOs , the world barely blinked. If that had happened in the 70s or 80s it would've been much bigger news.
What does fan the BF flame now , however, is the recurring reports from private individuals with nothing to gain, a reputation to lose yet still come forward because they saw something that left them with more questions than answers.
Those are the people ,if they're willing, to talk to or read up on and you wouldn't need big budget outdoor gear to do that.