Most interesting thing is that after opening this thread i have got only few claim here and feeling really curious about that 16k participants. Maybe they are spending long holiday's or sleeping. So what more we could do for this kinda sleeping bounty hunters where they don't care about their own payments too.
I was part of BQT bounty campaign (1 of the 16k you are referring to), and tbh I just saw your thread today. Well, that was because I was busy with my life outside the forum last August, but that doesn't mean I don't care. I was part of their telegram channel for bounty and read updates there from time to time. Like me, several participants may not be present here but are part of that.
Though, because it took too long, really long, I'm sure many participants already lose hope and just forget about it. Last May, BQTX team made a new Telegram channel for bounty, and from 657 members from the old group, only 180 joined.
Anyway, thank you for your help too and Coolcryptovator, xtraelv as mentioned by BQTX support.