What doesn't follow? Who said we should repeal section 230? Or to do so without replacing it?
Not me, I said I was ambivalent about it; don't put words in my mouth. My words were: "there would have to be some similar provision [to KYC]". Similar, not the same. Not nothing.
Everything else sounds like you imagining/speculating about what some future provision would look like. And your imagined fears don't play into my ambivalence.
Here's my paraphrased view of the comment chain:
1. stillpointlab: "I'm ambivalent about Section 230. Also [other things not discussed further]."
2. applfanboysbgon: "Hey, you can't be ambivalent about Section 230, removing it would be disastrous, any website like HN would be in shambles."
3. stillpointlab: "Websites would be OK if that happened, there would just have to be some provisions around anonymity."
5. Terr_: "Where did this talk of anonymity come from? That's not what Section 230 does."
6. stillpointlab: "Who said anything about removing Section 230? I didn't say that and I wasn't talking about that happening."
7. [Error: Recursion detected]
In other words, the thread was was steered into "what if Section 230 went away" (at #2) and your reply looks as if you recognized that and proceeded to build on it.