Common or not, it is ridiculous to allow a company to insulate themselves against disparagement for unknown future conduct. It would be one thing to rule out di

Common or not, it is ridiculous to allow a company to insulate themselves against disparagement for unknown future conduct. It would be one thing to rule out disparaging them if it were backward-looking. You could think about what they had done and say "yep, they haven't done anything all that bad." However, they could do literally anything in the future so it really shouldn't be acceptable at all to give them carte blanche for arbitrary behavior. Of course, at the end of the day it's your choice if you want to sell some of your basic rights for this job, of course (in my opinion, though, it shouldn't be: this should be very illegal).