That’s a pretty accurate way of describing it. I always thought that the major issue with adapting these books is going to be that the basic premise sounds more action-oriented and child-friendly than the actual stories. The studio probably doesn’t want to get into the more serious/scary elements and turn it into a more straightforward, broadly appealing adventure story.
Like their transformations were so gruesome. They were always scared for their lives and scared of being captured and tortured. Even with the action, the vibe was usually like “they’re fighting for their lives and they could actually get seriously hurt or even die”. And they all suffered some serious consequences. Without all that, it would very much be another Percy Jackson situation.