I was taught to handle giant pulls by FC tank friend making tad too large ones on purpose but that was in mutual understanding "hey, let's see if you can handle the next one" and I was "ok", sure we wiped some times, and on other times I was able to handle stuff he didn't expect me to. But that was in party of four where everyone was up to it. Not a random party that just wants their daily clear instead of a crash course to "how to pull too much".