I love uMatrix but it can be a serious hassle to get an embedded video to play sometimes. Sometimes I'll allow scripts from the embedding site and suddenly there are dozens or hundreds of new dependencies popping up and not my video. At this point I really have to ask myself if it is worth it. Maybe if I'm lucky its a YouTube video and I can track it down on YouTube's site, but if not it's going to be a big headache and a lot of reloads before the stupid thing plays.
I just got in the habit of turning it off, when I'm either too lazy to bother, or I'm on a site I'll probably never visit again. sites that are already setup ofc generally stay that way.
The big headache is when you have a site half-setup -- its correct for all of your usage, and then you try something new and you get a video that doesn't load, and you sit there waiting until you realize umatrix probably found something new
Same problem here (not using uMatrix but something similar being NoScript) => I'm now constantly using 2 browsers, Firefox with NoScript as a base, then temporarily switching to Chrome to access the sites which are demanding in terms of dependencies as you described.
