You can use and support Tor! It’s easy with a bootable version of Tails, I use it to access Proton Mail since they make their regular services also available on an onion site (the link is on their regular website).

Torvalds wrote git for the Linux kernel, and then GitHub popped up because most other projects couldn’t handle the decentralization. Interestingly to OP’s frustration, they were using a proprietary VCS before that, and people were just as frustrated about that: https://en.wikipedia.org/wiki/Git#History