We do, Britt & Quick...We had Cook....Hell, we had Danny Amendola. And we still draft wr's pretty terrible, yet even the Rams had wr's that could be productive in the right system.
There was this guy named Matt...Matt Millen...He once drafted a wr in 3 consecutive drafts, high in the 1st round...he finally ended up with Megatron....And they finally went to the playoffs when he retired. Wr's, dominant wrs, are not a necessity to winning. Decent ones will do...Good QB play can make AVERAGE WRs look pretty damn good.
I do believe a true #1 helps. But any one player can be effectively taken away.
The advent of 7-on-7 passing camps has increased the number of players leaving college that can catch the rock. It has also trickled down to the defensive backs too. It's easy to draft very good skilled position players, if you know where to look. Don't overthink it.
Sorry Trony, Britt is probably better than Marshall at this point in their careers.