I am not a fan of that naming scheme, but it definitely predates Reddit. I remember the old Saw films being described as “torture porn”.

Limiting it to FOSS does not seem like a good idea. And this is coming from someone who has never touched a proprietary Lemmy app.

Don’t rely on whatever host you’re uploading to to strip your metadata. It’s safer to do it yourself locally with something like Scrambled Exif