It is a 50/50 shot for me if it makes you login with old or not

Proton mail has a feature where you can create a new address that ties to your main one, but nobody except proton knows it is you. They end in passmail.net. I’m sure there are other providers that do similar things

I define a plot hole as doing something that doesn’t work in the established roles of the series universe. The show universe is not shown to have rules different from our own, so if it wouldn’t work IRL then it shouldn’t work in the show.

I acknowledge that this is probably not a common take and even so it is a stretch to make the claim.

Closest I can think of is the magnet thing in the season 5 pilot would definitely not work IRL