It’s a volunteer and donation run anarchist collective that has been around since 1999. They have fought a number of legal battles against governments to varying degrees of success.
The people involved have close ties to basically everyone involved in Tor and should be regarded with the same level of trust (what ever that means for you). There’s also a lot of overlap with some core Debian contributors.
That said, I wouldn’t use them for P2P other than occasional use. Or if you do, consider making a substantial monthly donation. It’s a lot of resources to pull from a small organisation at the expense of people who need their services for political organizing, which is their primary focus.