Vandalism is actually defined by law in the various states; I'm not sure that applying a non-marring piece of paper to a gasoline pump quite fits (certainly less so than spray-paint graffiti or "tagging"). Similarly, I find it a stretch to compare a person with a sheet of self-adhesive stickers bought on Amazon with organized looters, arsonists and other rioters. But that's just me.
The real elephant in the room is freedom of speech and specifically, political discourse. When one side of any issue is subjected to shadow-bans, closure of social media accounts, routine harassment at the hands of "moderators", ad nauseam... well, that expression is going to find an outlet somewhere beyond the reach of the media and the tech lords. Where is it likely to be visible? Why, at public gathering places... like fuel retailers. And yet they have the gall to act all righteously indignant about the unintended consequences that they set in motion.
If we continue on this path, the day may come when BP execs and the rest of the faux outrage crowd will fondly recall the days when we only used paper stickers to communicate our displeasure.
You might feel differently if you were the random gas station owner hit with a 400-dollar fine.
Since you feel so strongly about it, you should volunteer to pay it for them.