I'd be interested to know if it's sufficient to avoid this recent vulnerability. Either way, it confirms my opinion that UI animations are an anti-feature.
As a uBlock Origin filter (paste in Settings > My Filters):
! No CSS animations
##*,::before,::after:style(transition:none !important;animation-delay:0ms !important;animation-duration:0ms !important)
! No CSS animations (different method)
##*,::before,::after:style(animation-timing-function:step-start !important;transition-timing-function:step-start !important)
There's other (often perf heavy) CSS clutter that's nice to get rid of:
! No image filters
##*,::before,::after:style(filter:none !important)
! No text-shadow
##*,::before,::after:style(text-shadow:none !important)
! No box-shadow
##*,::before,::after:style(box-shadow:none !important)
! No rounded corners
##*,::before,::after:style(border-radius:0px !important)
No rounded corners is fun. You realize many loading spinners are actually CSS rounded corners! Youtube becomes almost unrecognizable — mercifully — especially if you also revert the new TikTok-inspired font: