what you said is literally false. here's his in-depth critique:
"I’m going to lose a crapton of potential upvotes for Tabletop, because the core of my audience is tech-savvy and may not want to “upgrade” to yet another fucking social network they don’t want or need...
Those upvotes are incredibly important to us, because we need them to earn another season of our show...
[this] will negatively affect how users can interact with us on YouTube."
translation: "we might lose the ability to do our show, because this G+ +1 button introduces friction and a sign-up process we don't expect our users will bother to complete."