Nope. Youtube ads are served from the same domains as the videos so there is nothing you can to to block them via DNS. Your best bet is just installing Ublock for them. Now a days an ad blocker is a security necessity anyways.
Installing uBlock is so quick, all you need is 30 seconds of their consent to lean over their shoulder and install it. The whole process can be faster than the actual ad break, in some cases.
Doesn't really work for all "embedded" devices, though. Phones, consoles, sticks, etc. all come with their own apps and there's unfortunately not always a reasonable way to install solutions there.
I actually really like the unified remote app. It lets you use your phone as a remote for any computer on the same network. I think the premium version just lets you link more computers otherwise the free version is just as good.
It does not. Domain based blocking does not work with youtube.
Your link event says it:
Some ads may […] be served through the same domain as the website, making them harder to block without blocking the website itself.
There is no point in using a proxy for this, because of https it won't be able to block more than with DNS blocking. Maybe a tiny bit more if you set up mitm but that's really not worth it.