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.
Being present in the moment means not having your mind wanders. You can still have moments dedicated to planning for the future. And you can also be present in those moments, planning while not having your mind wanders.
Now I think it’s also important to add that it’s normal for the mind to wander. You don’t learn to be present in the moment by being mad at your mind for wandering. Just refocus on your subject once you’ve noticed that you’ve wandered away.