> That and the fact bookmark may ends up in a removed page, orphan link.
Except in the immediate short-term, keeping a tab open doesn't really fully help in that regard, though – even if the browser doesn't autonomously unloads tabs, sooner or later most people will eventually need to restart the browser and/or computer for updates, old pages are eventually evicted from the browser cache, and so tabs suffer from link rot just the same as bookmarks do.
Except in the immediate short-term, keeping a tab open doesn't really fully help in that regard, though – even if the browser doesn't autonomously unloads tabs, sooner or later most people will eventually need to restart the browser and/or computer for updates, old pages are eventually evicted from the browser cache, and so tabs suffer from link rot just the same as bookmarks do.