The most recent excessively sensitive band member was about four years ago, and was the drummer. The guitarist/vocalist was doing a post-gig critique at the next rehearsal, and mentioned the speed of one of the songs (he'd also mentioned where he'd c0cked up and where I had), at which the drummer took umbrage, packed up, and departed.
The last few bands I've been in haven't had any sensitive souls, which is just as well, as my social skills are extremely lacking and I'll point out mistakes (and confess to my own).