Anyone who thinks the Google author's piece represents degradation of the workplace environment needs to put up a valid non-circular argument for why that is the case.

No one has. And no one will, because the piece is very polite, sincere, well-written, and reasonable.

Anyone can claim their feelings are hurt by someone speaking the truth as they see it. That doesn't mean you get to use that claim (true or not) to impose your will forcefully on others any time you want to.