My display is 144hz and I’ve played quite a few games at that framerate. When you’re talking about smoothness, what you’re actually talking about is frame time. A consistent FPS at 30 is smooth, if there’s not inconsistent frametime and stutters.

Idk man, I’ve enjoyed many a game at 30 fps. 60 is my general target but acting like it’s a minimum to have a fun time is ridiculous.