But is that really that different than electronically reinforcing the laughter from the audience to make the audience think there is more laughter than actually exists?
It's not different at all. I wouldn't go to any performance where the audience's reaction had to be manipulated. That's cheating! If the performance is so lame that laughter had to be added, I'd rather be somewhere else where there was something more entertaining on stage.
It's similar to the season premier last night of "Two and a Half Men". I was a fan of Sheen, but I liked Kutcher too. I watched the show, hoping it would be funny. It wasn't. The thing I noticed the most was the laughter from the audience. There were funny parts, and there were not so funny parts. The way the audience laughed, you'd think it was the best show on TV ever. I could tell that there were people in the studio audience who were being paid to laugh at anything that moved on stage. I felt as if they were trying to deceive me into thinking that this was the greatest show ever produced. It was a HUGE turn off.
If you can't put something on stage that can stand on its own, you don't need to add canned laughter or microphones in the audience, you need to fix your show.