You're a bit skewed here. The throw to Nick was horrendous, and it would have been a miracle catch if he got it. Running one direction and catching a short pass (little reaction time) outside your back knee is a magic trick, not a catch. That was brutal because it's such an easy throw to make, as well. There were a number of instances where WRs were open and he never looked to them, he was late to react, and by the time he did, they were covered, or he just put the ball in the wrong spots. The WRs take a ton of abuse, but it's a combination of horribly drawn up plays, poorly called plays, bad decision making by Drew, bad execution by Drew, and bad WR play. Finding one person, or group of people to place blame on is just a cop out.
I remember one play that was posted on twitter with the narrative that the WRs stunk, and weren't even running/trying. Except the reality of that play was it had 2 WRs running slant-ins at the exact same depth, meaning they'd eventually hit each other in the middle of the field if they kept going. And they both had a man on them, AND there was an LB just literally sitting in the middle of the field, right where they were going to converge. The one WR was actually open early in his cut, and he saw the LB just waiting where he was going, so he essentially sat for a second (slow jog), waiting for Allar to find him and make the throw. Allar was busy looking elsewhere, or didn't compute that he was that open ... and the guy eventually started going again, at which point Allar tried to make a really tough throw into traffic. So, unless the WRs just ran the wrong routes, or ran them poorly (wrong depth), that play looked like a combination of being poorly drawn up, and poorly executed by the QB, with the WR actually trying to make a smart play, and, yet, the WR was still taking heat.