Tapas can mostly be trusted. Trusted as in, they have a clause that could screw you over, just in case, but they don't use it. Webnovel has many clauses that could screw you over, and they abuse it as much as they want. For example, the clause 'has the right to repost or use your stories elsewhere within the network for any purpose' exist in both tapas and webnovel user agreement, but tapas don't make use of it, or at least they use it very sparingly that nobody really noticed. Webnovel however, would use it everywhere if they feel like it would drive profit. No this is not exclusivity deal, this is the standard ToS that everyone agree to by using their website.
Sure you own your copyright and webnovel is not allowed to use your stories after you left their platform, but seriously... who's gonna stop them? You? Good luck winning a court case against a Tencent subsidiary in China. DMCA? They don't care, they'd just say 'fuck you' and laugh at your face. The only way you can win is by being so boring they'd be glad that you left and no longer waste their bandwidth.
To get back on topic, Tapas is more or less trustworthy. They have not consciously tried to screw over their users so far, and has been pretty supportive of content creators. However, tapas is a webcomic platform, with webnovel being an added bonus. So to make money with tapas, you need to either be a very good author or you're making webcomics. Or you could be a good author, then get approached by an artist there for a webcomic collaboration and split the profit with the artist. You do not need to sign a contract either, as soon as you decide to monetize your publications, you can make money through that ink thing.
Ai-chan's Hounds of Hell was originally exclusive on Tapas but reposted it here after the contest period ran out.