Bad Gm's draft early in the 1st round receivers. Receiver is the most dependent position in all of football.
We can find good receivers who can contribute day 1 in the 3rd or later rounds. There is so many fast guys out there with good hands. You do not need to waste early picks on 1 nor sign some free agent that commands top money.
Truthfully a tight end is more valuable than a receiver. In pay they are not but they are so athletic and big boys usually. Jimmy G, Kittle, Shockey, Gonzalez, Sharpe, Kelce, Taysom, etc. Tight end can do way more than a receiver.
How many times have we heard from the announcer or over the loud speaker call an average tight end named Alge Crumpler. Thats just 1 example.