Maybe a silly noob question, but... why would using a glass lid make maintenance much more difficult? You can always just take it off (or flip a hinge) to get inside the tank. Especially having hard water, I like to keep evaporation to a minimum, and wiping off condensation now and again seems like a small price to pay.
I think it’s just that some or most are lazy to take off the cover! I find it a hassle just open the cover to feed! Lol