I'm on mobile so I cant link it, but carykh on YouTube made a bunch of tools like this that remove silence or edit clips on the fly based on you putting a thumbs up or down along with other things. Definitely worth checking out if you want to see something that already exists.

If you do see their animated videos you'll find out that actually most of the animations are automatically created via a script that works with phonetics and emotions they hint it to show. Pretty cool stuff.