An offense built around the “true #1” is built and run differently, and there are consequences to that.
Biggest to me is that it at least tacitly formalizes one prima donna with everyone else being supporting cast. That shapes locker room chemistry, not always for the better. Too often the prima donna egos get upset, e.g. not being targeted enough (see AJ Brown). Also affects young players and influences their development. How can Boutte or Williams develop if they’re never targeted because you’re throwing everything to your #1 WR sometimes he doesn’t lose his temper about too few touches? It distorts the whole offense.
Practically, it puts all your eggs in one basket. If the #1 WR is injured, or the opponent shuts them down, the offense is severely crippled. It’s almost inevitable that when you invest disproportionately in one weapon and make him the centerpiece of the offense there’s a gaping hole left without them. It undermines resilience.
And none of that says anything about what they do to finances, and cap position. Those are obvious challenges too.
It’s not as sound as a balanced offense, imo.