Working in IT, I have learned that a lot of meetings are by people who gain "respect and notoriety" by having large meetings. It doesn't matter who shows up, it's the number, that makes them seem popular. "Get the engineers in here, this is serious business!" You begin to learn which PMs do this, and can respond (or not) accordingly. If they ping you "where are you?" you can say, "I am in an [client] audit call. I cannot leave this call while the audit is taking place." Or whatever your industry equivalent is. YMMV, some toxic environments I have been in, this was not possible.
I remember one PM was frozen in indecision. I had to tell him, "I can fix the problem, or having a meeting about it. Pick one."
"Well, both--"
"No. I can fix the problem, or having a meeting about it. Pick one or the other."
"I need you in this meeting!"
"When we explain to the customer that the fix was delayed by an hour, I can use YOUR name, as having a meeting about it instead of fixing it, correct?"
"The meeting is to be about fixing it!"
"No. I can fix the problem, or having a meeting about it. Pick one or the other."
"... we can have the meeting in your office, then."