@MisuseCase @tek Can confirm this as a screen-reader user. Many accessibility violations, to name but a few:
Random focus jumps.
Abus of Aria live announcements interrupting the reading flow, I.E. video countdown timers.
And about those, while autoplaying video ads have *mostly* been nurphed by the browsers themselves, they can still start playing while muted and display an obtrusive countdown timer which, for a screen reader, often interrupts what is currently being read.