It seems no one on LW is able to explain to you how and why people want different material. To my mind, Kaj’s explanation is perfectly clear. I’m afraid it’s up to you, to figure it out for yourself. Until you do, people will keep
giving you invalid arguments, or downvote and ignore you.
Do you want new material which is the same as previous material, or different? If the same, I don’t get it. if different, in what ways and why?
It seems no one on LW is able to explain to you how and why people want different material. To my mind, Kaj’s explanation is perfectly clear. I’m afraid it’s up to you, to figure it out for yourself. Until you do, people will keep giving you invalid arguments, or downvote and ignore you.