Animation should be like a very thin layer of icing on a cake, but we're getting fed cakes with 4 inches of icing on the top. There is often little aesthetic restraint.
Designers should be asking, "how can I remove as much animation as possible?" It spammy and also an accessibility issue[1][2][3], especially when the animation is designed to mimic physical motion (parallax, Material Design, etc.).
To try and make computing bearable, I switched to i3wm and turned off all CSS animation in my browsers with Stylus. It's still too much.
I also have a suspicion that animation is causing cognitive damage to users by regularly breaking attention.
[1] http://simplyaccessible.com/article/animations/
[2] http://accessibility.psu.edu/animations/
[3] https://www.smashingmagazine.com/2018/04/designing-accessibi...