Did you read the article? Meta themselves aren't confident that what they're doing is legal, and they're very clear about the fact that it might be clawed back by the IRS because they're abusing a tax credit intended to be used for experimental research by putting their massive data centre build out into that "experimental research" bucket.

If a company's accountants and lawyers are concerned enough to bury disclosures in their securities filings to cover themselves, but the company leadership is brazen enough to proceed anyway, I'd say that's plenty of justification for people to be mad at the executive leadership.