PieFed has some design principles, including being accessible on lower-end devices and for those with unreliable bandwidth, which mean that it’s default UI is never going to look like apps which involve downloading a sizable chunk of Typescript.
I’m okay with its look. Partly because it’s themeable, and there’s a theme called ‘Card Shadow’ which looks more modern imo. And partly because Lemmy can feel quite slow showing 20 posts at a time, whereas PieFed throws 100 at a time. And also because there will eventually be an API, allowing people to view it how they want (similar to Lemmy - lemmy-ui is maybe not that great, but there’s other frontends which I think are an improvement)
Well, it won’t help you (or me), but the the most active is probably https://hexbear.net/c/ama (the lemmy.world seems to have got nuked, and the already-mentioned lemmy.ca one is the only other one I found)