This app was mentioned in 2 comments, with an average of 1.00 upvote
People seem to have got offended on my comment. :(
Btw if you are missing it, you can do it via Tasker very easily.
Or use this FlipSilent App.
There are some workarounds like FlipSilent where you simply flip the phone face down and it mutes everything. Some phones have this feature built in. But I agree, the way the software does it now is clunky, and a pain in the ass. A toggle switch I could just reach in, flip off and leave the phone in my pocket. Then flip back on when the meetings over.