> they don't fix their buggy mobile site and just put up a disclaimer "problems with the mobile site - download our app"
I would agree with this one most of the time, but even their desktop web is horrible in Firefox. It wouldn't load the pages/header with buttons, wouldn't show new messages from time to time.
Desktop LinkedIn is terrible too, it's absolutely unusable in Safari, lags and stutters constantly and seems to have a memory leak or similar where the page will get even slower (as if it wasn't already slow) proportional with the amount of content you have loaded. It pretty much instantly triggers the "page uses too much energy" warning.
I would agree with this one most of the time, but even their desktop web is horrible in Firefox. It wouldn't load the pages/header with buttons, wouldn't show new messages from time to time.