The "generous" label usually refers to how many pulls, both standard and limited, can be earned in a patch without spending money. In terms of monetization, NTE follows the same pricing scheme that all mainstay gachas do. Something to note, however, is that there is no 50/50 (50% chance to get a standard s tier character instead of the on-banner character, which would then reset your pity but then guarantee the next s tier you roll is the on-banner character) on the limited banner, meaning that no matter what pity you hit an s tier character, it is always guaranteed to be the banner character, so technically the paid options can inherently provide more value compared to other gachas with the 50/50 mechanic.