I don't know. He's not a rookie, but there are rookies with more football experience than him (college and pro). For example, Jayden Daniels attempted more than 1,400 passes in college, counting actual games played. Lance has attempted just over 400 (318 in college, just over 100 as a pro ... not counting preseason games).
I don't mind trying to develop a player with so little actual experience, but it really comes down to if we can re-sign him on a developmental deal. If we can get him to return for cheap, then let him be the developmental QB for another year or two. Realistically, that's probably when we'll actually be ready to move on from Dak unless we do better in the playoffs (if he signs an extension, then there will probably be an out for the team after three years). Either Lance shows by then that he deserves a chance at the still young age of 26 or we move on. But again, that's only if we can get him to agree to a cheap deal.