Tapas does actually allow full frontal nudity, but only very sparsely, and if it's not sexual in nature. I myself have a few pages with characters totally in their birthday suits, no censorship, junk hanging, tits out, it's still around. Even asked the staff about it ages ago, when the site wasn't so massive, and they didn't have an issue as long as I used the 'mature' tag for those pages. That being said, there's a chance they wouldn't be so chill now but just haven't been informed of it? Who knows, I've share it on the Tapas Discord server and everything, openly warning about nudity. I assume they know the comic is on their site, it's been there since 2016. Lol
The downside is your comic would be desktop exclusive, meaning people who use the app wouldn't be able to see it. This is something I'm personally fine with since my comic is 17+, I don't really want children to read it, and adults are more likely to use the desktop version than kids.