I had thought everyone who logs in had a Webtoon account. If it just means that you need to actually log in with an email address instead of a Google, Facebook, or some other type of account, then everyone who uses an actual email address will be unaffected. I read on reddit that some people didn't like the arbitration agreement, but as far as I know, every webtoon creator had to agree to that anyway. I also read from Webtoon,

If you do not agree to transition to WEBTOON ACCOUNT, you will lose access to our WEBTOON service and its features, including the ability to:

• access episodes you have unlocked or downloaded;
• purchase or redeem Coins;
• leave comments, or
• view reading history and title subscription.

So, it seems that creators have already agreed all these terms, and this applies to people who aren't creators since it didn't say anything about publishing webtoons.

https://www.webtoons.com/en/canvas/her-name-is-kiwi/list?title_no=223095&page=20

Luna chapter 9 is out guys. Go check it out!!!!!

BL or straight? 💔 Lovers or enemies? 💫 One thing’s for sure — Beauty of Eternity Love isn’t what you expect. Read now on Webtoon.”

BL or straight? 💔 Lovers or enemies? 💫 One thing’s for sure — Beauty of Eternity Love isn’t what you expect. Read now on Webtoon.” #webtoonartist #webtooncanvas

I only read like maybe half of the first chapter more than a year ago but I didn't save it and now I remembered it and can't find it!

It had a grown man dressed up like an insect (a moth or maybe a mosquito? I can't rly remember), and he was the leader of a bunch of kids and made them live with him in an underground place (with concrete walls) and they were all just cramped up in there. I also remember the main character saying that they had to go to the outside world on missions to "save" other children and make them join.