It's honestly the poor UX choices made by the developers and not making it blatantly clear on the terms of this new feature (I'm sure most companies do it so it prompts them first on their first actual purchase of said feature, so that help page with the fine print y'all keep pointing at should be popped up as a modal/pop-up that's intrusive and requires user-action to proceed further to purchase said feature). I'm pretty sure it was the decision of the devs to make it so it's a fast-transaction that's smooth/convenient, and leaving a small (?) at the top (because even a small bubble popping up from that (?) showing "more info here" could've helped lol.
I stand by my stance which is: Let people know of the entirety of the new 'feature', including any shady practices they've done in the past to show the possibility of dire repercussions in the future by accepting said practice with the simple "let people who want it pay for it" and encouraging WebNovel to innovate more ideas. Share our thoughts/feedback (i.e. don't get it unless you're crazy (fan) or lack foresight), and be transparent to those who are wondering how this works (or are not aware of it) so they can avoid accidentally purchasing this feature because they weren't given enough information.
Consider the entrapment that it inherently endorses.
Ex:
July 31st - Because I'm a huge fan of a work and paid for 50 advanced chapters, I am ahead by chapters 100-150.
August 1st - Oh no, I didn't pay. Now I am back to reading at public release rate (while I have my chapters 100-150 unlocked, 151 won't be visible until public release rate catches up to it).
Maybe it's not their intentions (lol), but it sure seems like they're exploiting those impulsive and obsessed readers who pay for that privilege (to pay again to unlock chapters after they unlocked the privilege to see the titles of the hidden chapters), because knowing how their shopping practices are, chances are they will be heavily influenced to pay that same tier or higher to keep up at the pace they were reading (because if they were patient, why would they even bother with this silly feature).
If you want to justify saying this is exactly like Patreon-- At least Patreon gave you the chapters as soon as you pledged the amount, not asking you to pay again to unlock them. On top of that, they had milestones for communities to reach, so when certain tiers were reached, it'd help the entire community collectively (increased release rates, monthly mass release increased rates, etc). Furthermore, the content creators in charge of said Patreon actually communicated with their readers more actively and was more inclusive.
What's WebNovel offering anything of benefit outside of it giving more money percentage to WebNovel instead of Patreon and their 'almighty' authors/translators/editors, and omitting many features Patreon offered. Oh right, a shiny new badge online that no one will see because your forums is only meant for people to either complain about your shady practices ("Premium Beta Program", remember your promises/claims then?), your buggy (web) apps, or Original authors circle jerking each other for reviews because they can't get any real 'support' they were promised from WebNovel on advertisement/promotions/etc.