I think you see it less often now, after almost every game in UE5 running like shit. It used to be a really common take, even here on Lemmy, a few years ago. I also saw many YouTube videos from these armchair designers with long videos that say this, so it's not short-form content that's the issue.
Regardless, the point is that many people will call for changes like this. They have no idea how complicated it'd be to get a new engine to work the way they want, let alone getting everyone adjusted to it, compared to the engine they've used for decades and have custom-built to do what they want from it.
Again, this is just a single example. There are millions of smaller changes people ask for that are similarly out of touch with what it'd take to do, and how that'd affect the games.