I though your reply was very nice, that's why I'm telling you this. It seems pretty much all of your comments are marked as DEAD so I think you might have fell in some kind of spam filter. Probably because most of your replies are short? Regardless, you don't seem unhinged or a troll, looking through your history, so you deserve to know this.
I doubt gp is shadow banned because their comments are short. It looks like many of their comments are abusive. Anyway, the system is working as intended as worthwhile comments can be rescued by the community like this one has.