as longs as u have ownership over your nextcloud instance, you can basically sync bookmarks from every firefox profile (i have a LOT) and to different computers or mobile devices
its helped me actually manage bookmarks and stay tidy, but then again most of the time bookmarks are just a glorified autocomplete for me now a days.
on artix linux it couldnt be less stable, i think its been around 2 years since pipewire has failed to work but maybe im just one of the lucky ones