Maybe. But what he is, is a 3rd WR.

Robinson is a good #3 WR.
He is NOT a #2 or #1 WR.
But, some team might see this good year and view him as a #2 and pay him too much money. Good for him, bad for the team that would do that, and the Rams would also miss him.

But, considering how little they are paying for Nacua, I think they could give Robinson 2 years $10 mil or a tad more and be happy with that.