It's not acceptable anywhere. Perhaps I mistook direct speech for sarcasm. I simply interpreted your comments about "less serious forms of entertainment" as a slant against all of those who play this type of venue or music. Perhaps I was wrong to do so. Even as a junior member, I know when to admit that....

You have to invest time and testing in your setup to avoid sounding bad. Of course you need talented musicians. Practice/rehearsal time can be a challenge ,but we do it. Doing 4 part harmonies requires it. A good monitor setup is crucial; it's a complete 2nd setup on the job.
We also do sound checks before we start checking tone, pa, and monitor levels. Of course this is adjusted throughout. This also means getting everybody there early enough to set up their own stuff and do the checks- a bigger challenge...