Yes, I agree, this is very important. The purpose of the module point is still to encourage members to use the site and reward those who use it a lot. Offering the upper limb level once a certain number of pre-defined points is achieved, is doubling the effectiveness of the module in its primary purpose.
In addition, it allows to advertise a free site without lying, because free for people who use it a lot, but paying for those who want the next level. I think it's an excellent compromise.

and automatically upgrading an account when they reach a certain amount of points.