WHAT!? I am genuinely curious why you think this?
For one thing PieFed was only centralized for a bit there at its start, whereas now there are already numerous piefed instances. It is true that piefed.social is still the #1 instance (much as lemmy.world had 80% of the Lemmy userbase at some point - but you still remain there even now so that does not seem to bother you?), but now piefed.blahaj.zone (not even 3 months old yet!!!!!), and piefed.world each have >100 active users, and piefed.ca, feddit.online, piefed.zip, quokk.au, piefed.au, etc. each have multiple tens of users.
More to the point, PieFed is FOSS. You could download the code and have your own personal instance spun up by the end of the day tomorrow.
I am guessing that you mean that the opinions of a single dev (Rimu) have an exagerated effect on the development of the code - which was definitely true in the past, but he also listens to feedback, apologies when he is wrong, and is amenable to going in other directions when the community wants that. The private voting debacle is one such example: I argued against it from the start, but he did it anyway, then abolished it and apologized to people when it received heavy criticism. You can read a really frank discussion about the topic where dbzer0 was considering whether to make a PieFed instance. Look especially at the comment starting with "I don’t trust Piefed at all - they’re far too eager to curate my experience, and they’ve reintroduced all of the reputation anti-features (plus more) that were part of what drove me away from Reddit and the absence of which is part of what I like about Lemmy and Mbin."
TLDR: it was a new project back then, and things were different. Also you might be unaware of the history of the development of Lemmy too, and of lemmy.world. These things are common, and nowhere close to be unique to PieFed. BlueSky on the other hand is corporate and so WILL be enshittified, eventually. PieFed on the other hand is just a better Lemmy :-).