It isn’t like that, and it is true. Lots of games in a specific engine share common traits. From physics, to rendering, to more specific engine stuff (think of using the full suite of lumen/nanite/ue5 rendering whatever).
Even the character actor can sometimes feel similar. Visuals are by far the most indicative thing of an engine. Don’t forget about unreal’s awful shader stutters.
calling that ridiculous is extremely strange. Feel free to prove it false I guess?
Hi-Fi Rush and Guilty Gear Strive are both Unreal Engine games and they look nothing like a "standard Unreal look" being both highly stylised.