After you do the verification if you press the back button (or access another LinkedIn URL) it asks you to do a check again, even if you did it 0.5 seconds ago. Once you verify you are not a bot, why put a log in modal on a 2 year-old article? Why put log in walls for any article whatsoever. Just plain anti-user anti-patterns.

And seriously, given the current state of image classifiers, if anyone at LinkedIn imagines selecting a bull in the right position stops any kind of bots whatsoever, they are ludicrously delusional. Anti bot/crawling measure may stop 1% of the bots, but annoy 100% of the users. They just have 100% disrespect of the users' time.