The phrase "than practical" is an idiomatic expression that means "more than what is reasonable or practical." It suggests that something is being done in excess, beyond what is necessary or feasible.
Sentences with «than practical»
It can be easy to see a cute puppy and make an emotional decision rather than the practical one. (servicedogsociety.com)
I see this program more as an entertainment application than a practical one to be honest. (pocketberry.com)
Then too, the resulting structures could be more theoretical than practical, meaning they might not exist in reality. (pnnl.gov)