I don't know the ins and outs as well as some others, but I'll give it my attempt at explainig:
BMF was a posted from the old days, when we were on Reddit. They'd come into the chapo sub and make a rambling post full of esoteric phrases, and some phrases that have become in jokes (like the 'PMC DSA Karens' bit). They would post the thread, and then just leave and not reply or explain anything. Most of their stuff was very confusing, until you got used to reading and parsing out their posts.
They've been missing for a while now, but we still carry on their spirit from time to time with BMF posting.
I don't know the ins and outs as well as some others, but I'll give it my attempt at explainig:
BMF was a posted from the old days, when we were on Reddit. They'd come into the chapo sub and make a rambling post full of esoteric phrases, and some phrases that have become in jokes (like the 'PMC DSA Karens' bit). They would post the thread, and then just leave and not reply or explain anything. Most of their stuff was very confusing, until you got used to reading and parsing out their posts.
They've been missing for a while now, but we still carry on their spirit from time to time with BMF posting.
To expand on this, BMF has had plenty of alt accounts which persist for a while until they get banned for secretarianism again (and again.)