I wouldn’t damage public property. You certainly can improve on it. A couple of weather treated 2x4s would raise the seat up, just high enough to clear the armrests. You wouldn’t draw attention to yourself while grinding, but instead it would look super clean and nobody would report it.
An angle grinder would make short work of those “arm rests.”
If you don’t do it perfectly, it’ll leave sharp edges.
i doubt they are welded, a wrench or pliers might do
I wouldn’t damage public property. You certainly can improve on it. A couple of weather treated 2x4s would raise the seat up, just high enough to clear the armrests. You wouldn’t draw attention to yourself while grinding, but instead it would look super clean and nobody would report it.