They obviously don't want TMs skewing results in any store in any direction: no inflated praise for your own store and no disparaging comments for another store.
The only way around this is to pay without using a card attached to your discount because then they don't know you are a TM.
It probably varies from store to store, but in general, the feedback is definitely read. I know someone who's gotten an email back from a survey they filled out.
Also, it's part of the reason some of the pride stuff was pulled: they were getting threatening responses in addition to the in store disruptions.