well that's the thing, Google isn't even asking for the verification code anymore. Somehow I'm still logged in on my other device, I'll use that as a sign of luck and migrate all of my data to a new account while I can. Will also try to rely less on Google for instance. Would also need to start receiving mails from my old email address. The worst part though, the moment I logged in with my new account to my old Macbook Pro, it treated it perfectly fine and rather said that my other device (the new Macbook Pro from which I was locked out in the first place) is suspicious or something without any rhyme or reason. I've checked all of my apps, extensions and everything, it's all legit.
Guess Google simply sucks since it doesn't even provide customer support in this matter.