Web would be a better place without UI animations.

I agree with you so much.

UI animations and needless "glitz" is inconsiderate of low-vision users, users who might have poor technical skills and who rely on UI consistency to accomplish tasks, users with low-spec hardware, users who are forced to use remote framebuffer protocols over low bandwidth connections, and of the environment (by way of increased processing power and electricity required).

Personally I don’t mind them and sometimes find them quite tasteful. Fortunately a lot respect ‘prefers-reduced-motion’ these days.

The early 2000s was the golden era of web.

Why stop there? Just make everything static everywhere. /s