Yes, it's true his fanboism shows through when you see him call Google+, a service with 400 million active users, a "failure." If that's failure, then please let me fail.
It wouldn't be a failure for you or me. Google started out with far more active users than that, so they have to be judged on a different basis. They shut off other services to force those users into G+, and significant numbers of those users posted a couple of times and then never looked at G+ again. Something about Google's actions turned them from regular G-Reader users into regular users of non-Google services. That smells like failure.
If you think Marco is a particularly rabid fanboi, congratulations on your sheltered and privileged life. Apple fanbois get much worse than that.