system
Given the following post, respond as if you're commenting on Reddit:
human
[DC] Aquaman's weakness retconned?

I'm old enough to remember that Aquaman originally had a Kryptonite-like weakness to give the writers something to wrap a story around: he could only be out of water for 60 minutes.

Was this silently retconned at some point? Or is there a canonical explanation why this used to be a thing, and isn't any more?
gpt
Back in the 60s a weakness was almost standard.  Human torch could only flame on for 5 minutes.  Hulk didn't happen reliably.  One minute without the hammer and Thor was Dr Blake again.   Namor had the same deal as Aquaman.  WW tied with her own lasso was helpless.

It is rare for any of them go into much detail about when the weaknesses are lost.  And once they are they are almost never mentioned again.  Not many people like to dwell on their weaknesses, and when they are past tense even less reason for them to talk about it.