Given you didn't grow up to be trans then perhaps it wasn't the same thing? Or perhaps as you said its a continuum. The evidence shows that many children go through periods of some kind of gender nonconformity or even dysphoria but it is the strength of that dysphoria that is the best predicter of whether someone becomes a trans adult. Yours diminished in adulthood to a point where you could live with, for many trans people it gets worse, often building to a crisis point which leads them to socially or medically transition. I suspect what rankles is the idea that some form of gender discomfort in childhood is the same as transgenderism is the implication that the first group managed to cure themselves and as such trans adults are deficient in some way for not doing the same. Or their feelings are not really authentic and if they just developed a radical analysis of gender they'd be fine. Until recently most trans people presented for treatment in middle age, often after a lifetime of denial and self-repression. All the evidence shows it is not something that goes away. For someone to say they felt like that's bit as a kid but it mostly went away does not match with the typical transgender experience which is why most would say it's not the same thing, or if it is it is very different in magnitude. Perhaps a better understanding could be reached if there was a general acceptance that all feelings of gender unease, discomfort or dysphoria are sincere and authentic, whether someone ends up cis or trans, or does not feel comfortable identifying as eithetr, which is fine. That doesn't remove the need for a descriptive antonym for trans though, even if like all such binaries, including man/woman, it does not quite adequately explain everyone.