The "port 443" part is the real trick here and you can push it way further than just YouTube. ISPs throttle by looking at what kind of traffic it is, so the second everything looks like normal HTTPS on 443 they lose the ability to tell a video stream from a web page. You can do the same thing with a lot of other stuff, like gaming traffic or big downloads, by tunneling it through port 443 instead of letting it go out on its normal port. Problem is some ISPs have started using deep packet inspection to sniff past the port number, so it works great until your provider upgrades their gear. If that day comes, you would need something like a Shadowsocks or WireGuard setup on port 443 to keep fooling them. Test it with a speed test at 8pm and again at midnight to see if the throttle is actually gone or just hiding.

Man, been there! My oven was off by 50 and I spent months blaming my butter. Get a cheap thermometer and check it every few months, they drift over time. If it's really bad you can usually adjust the temp calibration on newer ovens or just learn your oven's offset and bake around it.