Let's assume that the GM of an NFL team and the HC of an NFL team know at least as much about football as you do.
Let's also assume that the NFL these days is a passing league with extreme importance placed on the QB and passing game.
Let's further note Tyrod Taylor's obvious deficiencies as a passer and the team's decision to name him the starting QB again.
Now look at what the GM and HC did to our roster in terms of WRs this year as you note in your post.
You could almost argue they are trying to sabotage our passing game, couldn't you?
And in so doing, sabotage our chances for victory. Yes?
It sort of speaks for itself.
1. They didnt sign Boldin expecting him to retire.
2. Impossible to predict Matthews injury.
3. No one expected Jones to be THIS bad. Or else we wouldnt have traded UP for him.
4. Impossible to predict Clay injury.
Boldin, Mathews, Clay, Jones is serviceable for a team that doesnt focus on the pass.
Jones and a steaming pile of Poo behind him is not effective or serviceable for any kind offense.
And the 1 million pound gorilla in the room: our run offense has been completely destroyed this season with the new run block scheme and its been compounded by the dropoff in explosiveness from our WR group.