It's totally fair to acknowledge that Dak has had some issues and is being paid as one of the best QB's in the league, and therefore should deliver alot more than he has in the playoffs. There's also a huge difference between acknowledging this and hoping he turns it around vs. smugly and consistently trashing him when someone is supposedly a fan of this team. I genuinely don't get rooting against the QB of your favorite team and smugly hating on him. No one can prove that he doesn't have the talent or ability to do this. We've seen him play at the highest, most elite level and post the highest possible QBR. He's statistically always in the top 5-7 QBs based on his performance so it's certainly possible for him to fix mistakes and do better.
there are 16 QBs who make 30M and more. its the NFL. what we fans think is fair market value has nothing to do with reality of NFL market value. I can assure you 100% that there aren't 16 QBs in the league that can deliver a lot more than they have in the playoffs. there are at best 3 elite QBs, some really good ones and some good ones. all the non-elite QBs need a strong team around them as they have not the same impact as an elite QB. that includes the likes of Hurts, who had the best OL, top 3 WR group, top 5 TE, top 5 rushing attack and a top 3 defense. with that said, given those resources he was able to make it to the superbowl and ultimately losing to an Elite QB. point being that having an Elite QB is not the only way you can be able to compete, otherwise it would be a 3 team race for the next 10 years and everybody else can just go home.
and Dak is no different. he is not elite, thus less than perfect. he needs a strong team around him. and he has to get over the hump. as a result of not being elite, he will be inconsistent, with highs and lows as you mentioned.
the alternative is to find an Elite QB, of which in the past 10 years there have been about 2 drafted and about 3 really good QBs. its tough. that's why guys like Brady, Rodgers, Manning, last so long in the league. its hard to replace them.