[raxxorrax]

That is true, but I don't think there is a necessity of having an account (aside from the EU forcing age checks) and I don't really want Google drawing conclusion about my viewing behavior either. I don't believe these options will prohibit Google from profiling you.

[joconde]

Definitely, it only disables the client-visible effects of tracking. But I don't think one can avoid the hidden part by watching without a Google account either.