Yes, that's dicey. But that could be what happens when a team doesn't properly draft/develop players.
In the end, I don't think Cousins would have mattered - in this upcoming season anyway. With a good QB last season, would Denver have been a playoff team? Maybe, but if so, only marginally. They have massive holes all over the roster.
As it stands right now, Denver is weak at OT, OG, TE, DE, ILB, KR; then average (at best) at WR, RB, DT. We'll see where QB lands. There are a lot of positions of need on this team, and I'm not even bringing up the coach.
They are strong at OLB, starting CB, and possibly S. That's really it.
Also, there is quality depth almost nowhere on the roster outside of OLB (though lack of depth at a given position is a malady that exists on many teams in the league). Denver needs a pretty damn big influx of talent at a lot of positions. I don't see how it can happen in one offseason. They have got to start hitting on these 2nd-4th round draft picks.