"I just don't expect there to be blatant errors on the IRS website like that.

Is this the new normal we should start to accept?"

Are you signed up for governmental e-newsletters? OMG, starting the last year or so, they have had typos and errors and corrections and follow up notices to correct one that was wrong and even if there already was an attempt at correction: Grammatically and content-wise, which seems a bit scary.