Trashy aesthetics is what you get by default when you buy a PC.

Cheapest PC mech keyboard will get you blinking RGB.

Cheap PC case with front mesh airflow. Most likely will come with RGB fans. If it's real cheap you won't be able to even turn it off.

Same with cheapish mouse with decent sensor.

Needless aesthetics is almost unavoidable on the budget end. Unless you specifically go out of your way to pay extra to get models without RGB.

There definitely is a lot of pointless garbage in PC culture eh. Like touch bars, notches and aluminum unibodies, glass backs in devices that will definitely crack, single button mice, limited IO for devices... The list goes on and on.