You can get on his case, but I agree what the NPC says is inaccurate.

It leads you to believe false information.

If you know how leves work then it doesn't matter. You auto-correct in your head.
If you don't know how leves work, well you'll be confused until you do learn.

The NPC should state you can only do 8 leves per whatever in-game time the cycle runs on, or break the fourth wall and explain it properly, or not mention "8" at all but say you simply need to wait for more leves to become available because you've done as many as you can do at that time.

Grammar Nazi or not, it's false information.