I find it to be quite stable, I haven’t had any real issues, haven’t rebooted except for version updates which isn’t too frequent (stable). No GUI built-in, there are a few projects out there and they are working on one officially, but the cli is solid. If you have ever configured juniper routers/switches it is quite similar
If you have firefox mobile and ublock origin installed, open the addon settings and select my filters. Add the following (picked with ublock on desktop):
www.linkedin.com##.z-10.w-full.p-2.left-0.bottom-0.fixed.flex-col.flex.bg-color-background-container.rounded-t-\[20px\].text-left.promo-bottom-sheet__card www.linkedin.com##.overlay
Then apply changes. You should no longer have that annoying banner at the bottom of the page