One more anecdote from personal experience:
I recently played a choir concert with a small orchestra. The first rehearsal the drums were too loud in the very echo-y old cathedral where the concert was going to be held, so at the second rehearsal the drummer brought in e-drums to control volume.
The e-drums sounded so unnatural in the house mix with all of the real orchestral instruments and voices that everyone hated it. Even the FOH sound tech hated it. The e-drums just weren’t capable of blending correctly with everything else.
It sounded like when you have a meeting and everyone is there in the room, but there’s that one guy who is remote and so you’re hearing his voice through laptop speakers
So the decision was to go back to real drums for the concerts. The drummer pulled back on his dynamics and everything sounded so much better.
@OneEng to your point about the importance of vocals in the mix, I play for choir concerts a few times a year and in that setting the vocals are all that really matters. It’s a vocal concert and the instrumentalists are strictly there to accompany them, so the vocals mix in FOH is the highest priority. Almost every one of these shows I’ve done has used real drums. If the drums were causing any problems with vocal mix in the house nobody would allow it. The choir director runs the show and all they care about is the vocals in the mix. They would never allow an instrument to be too loud in the mix. Yet somehow the real drums work on this setting.
You can’t expect me to believe that real drums work well in that setting where the FOH vocal mix is all anyone cares about, but they can’t work in a cover band