The ability to filter comments actively as you mark them off as completed is magnificent.
You mark a comment, it hides itself. Neat and tidy, fantastic.
Why doesn’t Adobe do this, you ask? Who the fuck knows. Especially since you used to be able to in Acrobat.
Why? Were people complaining it was too helpful?
If you're cool with Invidious you can use instances via the Yattee app. (Not sure if it's available in every territory though.)
https://github.com/yattee/yattee
https://apps.apple.com/us/app/yattee/id1595136629