Well, if that is the point then you are highly underrating the development with the salary cap. Or just how it works, for that matter.
Also, while a general manager need to think ahead, it seems irrelevant to me to plan for what might happen five years down the road. Or as
@Cbus cardsfan mentioned earlier in this thread, teams don't draft with that option in mind, unless it is for a quarterback, and to that point, three out of the highest paid ILB are on different teams than the one that drafted them.
Going back from 2016 to 2020 (so long enough to proper evaluate the importance of the 5th year option), 24 off-ball linebackers have been drafted in the first two rounds, and two of them are Micah Parsons and Zaven Collins who have later been moved to another position. Of those 22, zero are on the team that drafted them, and none of them had their 5th year option picked up. That was
zero.
Drafting an ILB with a cost-controlled contract in mind is borderline silly. You draft him for more than his abilities on-field, just as you draft players at non-premium positions like Budda Baker or Tre McBride because they are tone-setters, playmakers, leaders. And if they do become impact edge rushers like Parsons, you pay them with a big smile.