Yes, they had reliability problems because so many fucking people are suddenly switching to them because they're so much better overall and not evil. Those are the kind of reliability problems that it is genuinely nice to see someone having. Having a little bit of a bumpy road when scaling due to significant rapid adoption is normal. So what?

Imagine not wanting to use Linux because it recently had a bunch of security flaws. And it did. But again, so what? Does that mean Linux has always been insecure? Well for those things it was. But is it still insecure? Maybe, who knows, nothing is perfect. Are you going to refuse to use it because you're not sure? Why? Past performance is not an indicator of future success.

If some minor reliability issues are your foremost concern to the point that the other things codeberg provides for free are not valuable to you because of it, I question the depth of your priorities.

That said, it is much healthier and better for people to self-host or use smaller less centralized providers if possible. I do not wish Codeberg to become a victim of their own success, and a healthy ecosystem is a diverse one. But it is not for everyone, and if all you need is a minimal fuss alternative to Github, Codeberg is right there.