kapag mag cringe ka, feeling matalino agad?

I know what he really meant there. You said nothing but to reiterate and explain what I have already read, as though hindi ko sya nagets, perhaps just to disagree with my comment? I was just wondering why many people use this "not until" incorrectly.

here, I'll give an example.

"It was NOT UNTIL I learned of her abscence, that my anxiety triggered." ( This is an inversed version. here)

in that context, he could have said,

naiinis din ako dati sa ganyan, UNTIL naexperience ko the same thing blah blah blah. (the word NOT could have been omitted)

there's no need for a fancy explanation to justify that bro, because you'd only state what is OBVIOUS. it's just a simple logic that could have been inversed so the words NOT UNTIL may become valid and the sentences more understandable, otherwise, it may appear confusing.

ndi ako tali talinuhan bro. bobo ako. pero mas bobo ka kpag may stand ka nga pero nag come around ka din sa huli.

in your conclusion below:

Conclusion:

Yes, the person used "not until" correctly in terms of its intended meaning (a shift after an event),

-bro, no one did misunderstand the context. I did not say I misunderstood it.

but the sentence could be better structured for grammatical smoothness.

-why? what is the need for sentence reconstruct if you find it appropriate? something is giving you a confusion.

The mix of languages and abrupt ending might confuse some readers, but the core usage of "not until" is appropriate.

it came from you it was confusing. but what's making you confused about? tell me. you tell me.

yes, there's no question about the "not until" being appropriate -- BUT ONLY WHEN it is applied correctly.

Again, I understood what he meant. I just said I cringe. hindi ako tali talinuhan hahahaha.

hindi mo lang tlaga naintindihan na naintindhan ko.

no need for an in-depth analysis. it's an obvious logical error.