Not really, the masked guy already does that. And the fact that Scarlett's sister (big spoiler from latest releases) also know about that in the past , it also reinforces that the Jenny being Gilmore isn't completly out of question.
I do think that the fact of Darci'mom still being an incognita still creates a lot of questions, but the theory above isn't bad at all.
I didn't suggest that Jenny can't be Gilmore (
in fact I fully subscribe to that theory and that she either knows who MC is all along or just feels a connection to him now that she's seeing him as he looks in her memories) ... I suggested the 20-year limitation isn't really relevant anymore ... so we're on the same page?
Also, MC never knew how masked guy gets around before, so until we see him again, MC doesn't have any actual evidence he didn't use the same device, nor that there were others.
Anyway, all I was saying was the 20-year "lock" on travel was never really something people should have kept hanging their theory-hats on.