It's an installer for an app on android. Android has been around for half of my lifetime at this point. Not know that is like not knowing what an exe is on a PC.
First of all, you said time or inclination, the latter is caused by the ads, the former wasn't really an issue as I've already said. Now you don't know what APKs are? YouTube won't stop with the ads. You either find an alternative, whether it's Newpipe or just abandoning YouTube entirely, or you put up with them and stop bitching.
You can't sit in the middle throwing your own shit at one side because "people will whine and then use it anyway" and then also at the other side because "it's too hard to install a different app and don't know what APKs are!"
So it makes sense to spend $50 a year on some pictures of those things that are already photographed?
I'm not sure how many times the things you're taking a picture of has been photographed matters even slightly.