I suspect rather foreign actors seed some of the anti data center narrative in order to try and reduce American capability to compete in the space, just like the Soviets did with nuclear in the 60-80s.
If they wanted to do that, they'd pick stronger arguments for starters. But either way, social media updoots and shares aren't going to change anything with capital's plans, so it'd be weird for a foreign power to think that it would.
They don't need strong arguments they need emotionally resonent ones, "AI is using all your water" is a more primal, plus doesn't matter they just flood with a thousand different arguments.
And updoots might not but plenty of people now are protesting and pushing against allowing data centers to be built near them so it is working.