What kind of idiot sound person puts on compression before hearing anything?
That said, I like a little bit of the drums in my IEMs, but not too much. Drums have a tendency to obliterate the other sounds I need to hear, like the other vocals, bass, a click, a track of music, etc.,….
But if I’m the guy running sound, if I can’t make things sound good with input gain, EQ, and level mixing, then I’d hand the job to somebody more competent. Jumping to dynamic processing before you get it to sound good otherwise is just idiotic. Gain staging is a forgotten skill with digital mixers that give you every bell and whistle, and the ability to “save” set-ups. It’s a shame really. The old school “zeroing of the board/starting from scratch” process is now a lost art.
OTOH - you’re not the guy mixing, and once the show starts there’s nothing else you can do from the drum chair, you’re at the mercy of the engineer. Perhaps having a nice conversation before sound check would iron out some issues.