Based on a quick look, the biggest features it has that browser bookmark managers generally don't have is the ability to search within saved webpages and documents without opening them. Plus, you can share bookmark collections with other people. Sounds a bit like a modern rendition of del.icio.us
One possible solution: if OP is allowed to connect their phone to their work computer, and they have a rooted Android phone, they could get around this using VPN tethering. I'll spell out how to do this, in case someone else can benefit from it.
What's needed:
Steps:
If it doesn't work, try turning on USB debugging on your phone, or changing default USB configuration under Developer options
Does YouTube Playback Speed Control work on other websites? I use Video Speed Controller, and it works on almost all video players. It's got shortcuts for your preferred speed, as well as for increasing or decreasing the playback speed.
I mostly just use NewPipe SponsorBlock on Android though, which lets you set a playback speed and it'll play all videos at that speed by default
If you did want to skip sponsored content within videos, try using SponsorBlock. It's an extension that skips ads, transitions, and other annoying segments within videos based on user submitted timestamps. Pretty much every YouTuber I've found with over 100K subscribers has already got segment timestamps on most of their videos. It really makes watching videos more enjoyable