I post on WEBTOON as well as Tapas, and I haven't experienced anything really negative there. I've had one rating-bomb, which sucked - but I created a WEBTOON rating thread here on the forums where we're all rating each other positively, which has undone that damage and helped out a number of other creators in the community.
There are a couple of things I will mention about WEBTOON, so you know the pros and cons.
- The audience there is much bigger than here. In addition, it seems more common for new readers to actually see your comic pop up on the 'genre-newest' lists when you post, so some growth can come rather organically. That never seems to happen here on Tapas.
- They promote diverse genres a little better than Tapas. If your comic is a sci-fi or something, it stands a better chance of hitting the likes of Rising Stars than... well, whatever promotion it is that Tapas actually does.
- The audience there has a vast preference for scrolling comics. You will want to re-work yours into that format. (Use Croppy for splitting episodes, it's such a huge time-saver.) I think a big part of that preference is because the audience skews younger, and their only personal device may be a phone.
- As mentioned above - the audience there skews younger. This is fine, mostly - they can get super fannish about your work, as teens tend to do! That's always fun. But also, teens can be jerks. A lack life of experience and/or an understanding of how busy adult lives can be means some of them can get prickly about short episodes, or missed weeks. That said, the majority of people on WEBTOON are perfectly lovely and very supportive! It's just a few rotten apples.
- They're stricter about nudity and gore, but if your comic doesn't have that, it's a non-issue.
- It does have a rating system, and that does suck. Encourage your supporters to leave positive ratings, so when the inevitable troll comes along and slaps you with a 1-star, it won't be as big of a problem.
- They link directly through to your Patreon at the bottom of each episode you post.
So far, I really like WEBTOON. My comic has twice the subs there, and now that I've switched to a vertical format I'm feeling pretty good about its chances. I haven't had any negative comments at all, and the rating snafu was a Reddit issue as much as it was a WEBTOON one. I recommend posting on both platforms.