Arguably, two of the best Fediverse clients - Voyager (Lemmy) and Phanpy (Mastodon) are PWAs. While you can get Voyager from the App Store, Phanpy remains in pure PWA form only so this pretty much sucks.
I'm a simple guy, someone gave me Apollo for Lemmy so I can carry on with my years of muscle memory. And since I'm ex-redditor I need my Mastodon conversations threaded so it's Phanpy or Ice Cubes for me.
What really got me on board with Voyager is how it copied UI pixel perfect. Most apps can't get things like font size and spacing right and it annoys me more than it probably should.
I tried it, and while it comes closest to resembling Apollo, being a PWA makes it fall short in terms of gestures properly registering every time and it also exhibits the typical Safari issue of falling back to scrolling the page body when trying to scroll a container (hard to explain).
It was definitely an issue but I think it got better over time. Or maybe I got used to it but I'm fairly certain that at least most annoying quirks were fixed.