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).

What if the "glitz" was optional and low-vision or low technical users could have a browser setting to de-glitz their UX? That way everyone wins.