There's this fallacy that just because something is popular, it must have some valid niche use case. That just because it endures, it must have improved somehow

There's this fallacy that just because something is popular, it must have some valid niche use case. That just because it endures, it must have improved somehow over the years, rather than just been taken over by an ever-proceeding chain of fools. You can usually recognize it because people refuse to explain why something is "good" or "better now", instead just blanket-asserting that it is.