I also heared that bit about the secret service owning nodes a few years ago. It was trough a teacher that’s also really in the stuff outside of teaching, and has a network of non-teaching proffesionals in the field.

It’s something to keep in mind, at the very least. Tor already has some weaknesses anyways. You shouldn’t trust it blindly just because it’s Tor. If anything, I think it more has a false rep for how strong it is over struggling with a stigma.