What I'm saying is that HN reflects the current mood and interests of silicon valley, and silicon valley has a very strong tendency toward fads. Right now, the fad is AI.
I'm not saying AI will go away as a topic. I'm saying that AI stories won't always be so dominant on HN, because sooner or later (likely on the sooner side of later), SV's hype train will move on to something else. Then the people who aren't so interested in the new fad will be complaining about how stories related to it are too dominant on HN.
Cryptocurrency is the last great example of this. The hype train has moved on to AI, and crypto isn't the the Hot New Thing anymore. So stories about it don't dominate HN anymore. Crypto stories still appear regardless, but at a more reasonable rate.