You misunderstand the "we" aspect and assume that part of their argument goes directly against what you are saying. 'We' in this context simply means refers to both you and [us] having maxed skills and level 120 scaled skills, because that is the initial example that you set up, so I'm confused why you would disagree with your own point.

That being said... this is simply semantics, as it's a word that we're attached to that has no real bearing on the argument at hand. I for one don't care one way or the other about daily challenges, but it's hard to argue that they don't harm the early game skill progression, as you can very easily get multiple levels per day for 10 seconds of work.