Yep, but the power on time is consistent with my usage. I read somewhere that you CAN modify the smart data. Maybe not on intel drives though.
You can reset certain parameters to test the drive health. That is, you can see what 'x workload' does to the drive. Resetting certain parameters thus is useful and is a feature.
Also, saying that intel doesn't allow editing smart values doesn't mean someone hasn't hacked it.