Lamar's QB skillset is very unique. That is part of the reason discussions like this happen all the time.
His skills allow him to do things most QBs can't. As long as his unique athleticism lasts, he will be successful.
The real question will be his durability. Once his evasiveness is reduced, he will have to rely more on his arm and QB skills.
Once that happens (and it will) his uniqueness will decline.
How well Lamar Jackson plays at QB on the other side of 30 will be very interesting to watch.
His current contract runs out at 30. Ultimately IMO, that will be how he is judged.