"Start here" prompts - long time user and cannot see a way to make them go away

Side note: even when done (and that bit syncs) having to click "finished" in every browser extension takes a chunk of time too (same for dismissing the notifications). I have Chrome, Firefox and Safari for various purposes across multiple devices. Chrome in particular has a profile for each Google account we have to make access easier and more controlled. Easily into double figures for just me to get through all the browser extensions. I know this isn't typical, but I'm sure it's not uncommon, especially with anyone from an IT background who has deals with web development from time to time.