not everyone going to be asking why we don't list the webnovel/webcomic...

Just like we don't list the Iron Man comics as relation to the Iron Man anime or the french comic Radiant on it's adaptation... the source is an OEL.
Submission Manual: Frequently Rejected Manga Titles/The Beginning After the End - OEL from Tapas
Unfortunately, this work doesn't meet our country of origin criteria, so it can't be added to our database. Because, while it's available on KakaoPage as of June 2019, The Beginning After the End was originally published by Tapas on July 7 2018, making it an English original.
TBH, the main difference is art style and the author country of origin.
kind of ridiculous not to add an obviously popular manhwa just for these reasons, anyone can see the difference between a manhwa like TBATE and something like iron man...consider making an exception for this. Rules aren't set in stone - it should always be possible to talk about them as a community and make exceptions were they are due.
That‘s what I‘m saying though. It was published on the official Korean publish site KakaoPage. You said it‘s been requested by more than a hundred people - it‘s ridiculous not to add it because „we need a scope“, when it could very well be added by not only how many times it‘s been requested (and will be requested), but also, it is on an official korean platform.
Seeing how the rules aren’t set into stone, there should always be space for discourse and if the majority agrees and wishes it to be added, it should be. It‘s not an unreasonable request - it’s on an official korean platform, its original language is korean, fullfils the requirements to be a manhwa, it’s getting an anime adaptation…and seeing as there will be many, many people more in the future asking for it to be added, I feel like it would be much easier for you mods to discuss & add it, and save the time you‘ll waste on these kind of discussions which are bound to happen as soon as this anime starts airing.
Welp, good to know that the reply to a sensible request and comment is to just ignore :‘)
“This movie from a popular franchise was shown in Japanese theaters, that makes it anime”

You can't seriously be trolling, as a mod no less, when we're reasonably asking about a manhwa. The difference between spongebob and TBATE is as stark as day and night, you know it but for some reason you just refuse to admit it. Why you guys are being so stubborn I will never understand.