A YouTuber explained it like this:
The Mac Studio is often used in a studio where you record audio or video and so you want everything as quiet as possible. Then there are those of us that just like a quiet environment. It's not hard to build a PC that runs cool and quiet - if you have a big enough case, and a lot of fans that move air somewhat slowly. And if you pick parts that don't crank the frequency to excessive levels. I buy the non-K Intel parts to do that.
I've never understood that justification for the Macs either (and it's been used for years - i.e. well within the Intel years) - they don't run cool and quiet when they're actually being used, and while the Studio is a lot better in that regard, you can buy, not just build, quieter PC's in actual serious load applications. But for reddit browsing, sure.
There's still not a single Mac I'd consider as my bedroom brainstorm system for example - i.e. something that's dead silent at 2am in my very secluded home.