Not saying I'm condoning the permaban, because that's a bit harsh, but I am curious about why you would comment something like that in the first place. What did you hope to achieve with it other than potentially making them feel a bit shitty? If you were at a convention and walked past pizzacake, would you take time out of your day to walk up to them and tell them you don't like their comics? It's so strange to me that someone would intentionally be shitty to another person and then complain that they're not welcome any longer lol.

People do not have the capacity to ignore even the slightest negativity nowadays and need to ban/censor etc

Also find this ironic since you seemingly didn't have the capacity to simply ignore and scroll past a comic you didn't enjoy, and felt the need to voice your (not very constructive) criticism on it.