I dont know if they more than a 5 year old about football. Considering the money I make betting football I highly doubt they know more than me.
Now there are two possibilities though. Given that Dak was 2nd team all pro this year and players coaches, and executives had Dak as top 10 before he was voted the 2nd best QB in football this year, either the haters are some super geniuses who are smarter than all the parties who are paid to know football and specifically teams and their strengths and weaknesses, or the haters are like the other armchair experts on the internets: random fools bloviating about something they could never hope to properly understand. Fun fact, those options are not equally likely.