The scanners at airports can certainly detect what kind of junk you have. There are tons of horror stories in trans communities. This one just seems like a hoax though.

I think it would be funny to put these stickers in front of every public restroom to scare the conservatives

KiCad. It’s an electronics design tool on par with commercial options in the industry, which cost a ton of money. Ever since the UI facelift it got a few years ago, it has become my go-to option. They are even working on integrating circuit simulation and finite element analysis, which is just crazy.