Unfortunately, it is highlighted by the fact, that all current Linux browsers are X11 and not Wayland clients, so using it would mean you watch the upscaling ugliness on your display every day.
In the gnome world, you are stuck with GTK3 apps if you want partial scaling that looks alright, but there are options for web browsers.
* Epiphany has supported Wayland since the time of the dinosaurs. And I know its not a perfect browser, but it (1) looks native (2) starts up in a second, (3) has libva support support for hardware accelerated video, (4) has a built in adblocker.
As for mainstream browsers:
* Developer builds of Firefox support Wayland straight from Mozilla: https://www.phoronix.com/scan.php?page=news_item&px=Firefox-...
* Most big name distros have some blessed(like fedora) or less blessed (aur/ppa) builds of the latest stable version of Firefox with baked in wayland support.
The Fedora Wayland Firefox package is experimental for a reason; there are bugs, that would be quite embarrassing for a default browser.
It's very serviceable if you are on a fast computer, and hardware accelerated video in a linux web browser is such a treat, but I bet any given release of the big boys has more patches in it than a year's worth of epiphany builds.
As for firefox-wayland, I've seen that fat bug tracker, and it doesn't have webrender or many of the fancier performance stuff working, but it does run well. I've been bouncing between the two browsers for a few months now and there doesn't seem to be any showstopping issues. It's just not as shiny as the real deal firefox.
Hw accelerated videos: some distributions (fedora, suse, arch?) have patched Chromium with VA-API support. On some GPUs, the allow_rgb10_configs raises it's ugly head though. In also works only in native X11, not in Xwayland. Other than that, it is only way to watch youtube during the more intensive compiles :)
https://www.omgubuntu.co.uk/2017/09/enable-fractional-scalin...
But it does work. I personally think it looks way worse than just going to 1x (or 2x) and bumping up (or down) the font size.