I had a similar RCIA experience, and I moved halfway through the process so I had two classes in two dioceses to contend with. The second one more fits the problem here; the teachers seemed to water down the teachings so as to not scare us away. The problem with it was, I kept thinking, how is this Catholic? They’re just re-teaching Protestant thought. There’s a lot to be learned from RCIA, good or bad, but what got me through was reading reliable sources on my own time (the Bible, CCC, other helpful books like “The How-To Book of the Mass,” “Catholicism for Dummies” was even good), asking questions and engaging in friendly debate (our class was nice enough to have lots of discussion opportunities like that), and having a close relationship with an established, orthodox Catholic, so even when something in RCIA was fishy or downright heretical, it stood out like a sore thumb and I could recognize it for what it was.
RCIA was a great experience altogether, but I didn’t rely on it for my education or formation in the way that I did on sources with the Nihil Obstat and Imprimatur marks. I think the teachers are genuinely trying to be helpful, but they really don’t want to scare anyone off by presenting things they’re worried may be hard for a convert to swallow.