Being a hypocrite makes you a bad person sometimes. It doesn't actually change anything factual or logical about your arguments. Hypocrisy affects the pathos of your argument, but not the logos or ethos! A person who built every single datacenter would still be well qualified to speak about how bad datacenters are for the environment. Maybe their argument is less convincing because you question their motives, but that doesn't make it wrong or invalid.

Unless HNers believe he is making this argument to help Google in some way, it doesn't fucking matter that google was also bad and he worked for them. Yes he worked for google while they built out datacenters and now he says AI datacenters are eating up resources, but is he wrong?. If he's not wrong, then talk about hypocrisy is a distraction.

HNers love arguing to distract.

"Don't hate the player, hate the game" is also wrong. You hate both.