Someone asked about Bowline follow through ?? thats the knot I tie in with, Its easier to untie especially if fallen on BUT I strongly recommend using a stopper knot, (I make it like a half fishermans with about 2-3 turns depending on how much tail I have)
Personally I’m happy to see someone at the gym taking notice of safety there, I’ve seen a few unsafe practices go un-noticed. Perhaps the way it was pointed out could use some work.