I believe the "parody of an NFL prospect" quote is from Football Outsiders and is pre-draft. It doesn't even place him in a round. PFF also said his college stats have never translated to the NFL, and has since reported on him with a tone begrudging any of his success.
There was plenty of pre-draft praise for Allen, aside from those sites. NFL.com projected him in the first. Walter Football had him in the top 10. CBS Sports had him top 5. Even BR had him Rd 1 (this is only the first page of results from Google). Nobody was laughing when he was picked, and no one was surprised.
Since then, it's been said he was a "laughing stock" of a pick, with little-to-no basis. People are really polarized on Allen SINCE he came out. I can only surmise that they really don't like the potential for their "bust" predictions to be wrong. Thing is, people are wrong on this every year (especially about Mahomes)....but something about Allen has had them up in arms for the past three years; re-writing history, even. I'm telling you, it's bizarre.