You're not even making an agreement. You're reading a notice, if that. In most cases it's entirely moot legally and only really useful as a policy tool for the provider to hang its "we're blocking you" authority on.
Having said that, I 100% agree. If Google allows for non-logged in users, it's a public website and we can consume it however we like, until Google decides to try to block us. That's what it's doing now, trying to block users from consuming the content however they like, a core feature of the public web. Fortunately, blocking us is very very hard for sites not behind a login. If they want not-logged in use, they either go to war with my tech, favored by platform, or they let it slide.
Now, Google owns Chrome, so they can also go to war in the browser and standards bodies as well. But for now, the web is open and accessible and that means, wiht the right technology (Firefox plus uBlock Origin for me) you can watch all those video ad-free and there's nothing Google can do to stop you.