[jasode]

> I've never understood why two threads on the same 'topic' is in any way harmful.

Speaking for myself (but probably many others as well)... it's a problem when they both reach the front page of HN.

There's a finite # of slots (30) and I'd rather see 30 different topics rather than 29 because 2 of them are about Procore S-1. And suggesting folks to just click "More" to see page 2 of topics 31-60 doesn't really solve anything because now I only see 59 topics because 2 are dupes rather 60.

When Facebook's Libra got introduced, the front page had ~4 simultaneous threads about it. A few of them thankfully got merged.