It's a dark pattern, because it's deliberately wasting everybody's time to cater to people who refuse to learn. It should instead say "verification complete in n milliseconds" (or n microseconds if the milliseconds number looks too small). There could even be a "details" link with a log of all the verification steps.
This is getting pedantic but: it's not tricking people into anything. People don't have a choice. In a real dark pattern, you're trying to convince users to do something -- here, the users were going to (get their numbers verified, do the web search, whatever) anyway, it's just the illusion of doing more work.
