If your concern is public relations, systematically deleting critique is amongst the stupidest things I can think of you doing.
On the gripping hand, systematically refraining from deleting (or better, shadowbanning) trolls is one of the stupidest things you can do if you want to maintain a community.
Reversed censorship is not a rational discussion.
If it's worth saying, but not worth its own post, even in Discussion, it goes here.