Even if there weren’t a million examples of prior art, the fact that patents on game mechanics are even allowed is just awful for the industry as a whole, and we as players should absolutely rail against this. Every game borrows from other games’ ideas and mechanics - I’d bet money that there hasn’t been a single fully “original” game in 20+ years. If companies are allowed to patent every little mechanic (even ones they didn’t come up with), the industry as a whole will just become impossible to operate in.