"Kad, I respect you and don't want respond hyperbolically, but whether or not people choose not to read here, shouldn't there be reasonable limits to what bashing we can do on this site?"
As long as it's not slanderous or libelous, or constrained by other limits of law governing speech, I don't see the need to institute limits. The moderators can, and do, see to moderate as they see fit, or in response to specific complaints.
Discussing performers and performances WILL yield opinions and thoughts that are negative. People WILL feel strongly about them- positively or negatively.
I have seen no evidence of what is spoken on these boards affecting box office or critical success, or whether or not an actor will have a successful career and find work.
Freedom of speech cuts both ways- good and bad, particularly on the Internet which for the most part is an ungovernable morass of differing points of view.
Broadway professionals KNOW what sort of discussions can and do go on here, or on ATC, or any other message board. They know it. They can choose to engage, or choose to ignore. Most choose the latter and seem to be better for it.
Throwing a fit because you peered into a place you know might contain things you didn't like and- surprisingly enough- found things you didn't like is ridiculous.
"...everyone finally shut up, and the audience could enjoy the beginning of the Anatevka Pogram in peace."