I mean, it’s being federated to Lemmy and most of us just see the Lemmy software as the open Reddit alternative. I’m still not quite sure what Piefed is like, I’ve pretty much never had to look past Lemmy and Mastodon.
I'm fine with it whilst there are maintainers with the whole "transgenderism is bourgeoise decadence" stance going on. I've happily worked with MLs and MLMs, I'm not a fan of bigots who work backwards to fit their ideology to their prejudices.
It's an entirely different codebase. Lemmy is written in Rust, PieFed in Python. If you're a Python developer you're not going to randomly learn Rust to contribute to the huge existing codebase that is Lemmy, and even if you did you might have a different stance than the Lemmy developers calling for a fork.
Furthermore, it's not a zero sum game. The projects share content, and both benefit from the success of the other.