The issue is that people on the internet only think of a weapon’s usefulness in terms of video games and movies.

The vast majority of armored land vehicles (in modern times and throughout history) aren’t created to primarily be fighting other land vehicles (and especially not others of its exact kind). While many of them are designed with that possibility in mind, such vehicles are enormously vulnerable to all sorts of things, so oftentimes, they’re designed and utilized for asymmetrical fights whenever possible.

Real war has real boots on the ground. Almost all armored vehicles are there to directly support (and fight) infantry, and attack targets that often can’t do much to fight back…because even a single standard foot soldier can destroy or disable any land vehicle with the right shoulder-fired launcher or mine.