Partially the politicization of it, but also because it is lumping together three issues that the society cannot even broadly agree one of the issues within 'ESG'. I don't think it is difficult to see why "ESG" is political by its nature.
I agree, ESG is just a bunch of numbers but if we can't agree on what the right output is then it's political in nature. I wonder if society has a bigger issue with disagreements about the E and S rather than the G, maybe not?
E and S are where many draw their political divides so I would tend to agree that is where many of the problems lie within ESG.