Think this is sadly true, DC does take the Teen Titans franchise as granted and as such take all manner of shortcuts where they shouldn't... like the inter-character relationships that was a big reason why TT is even a thing today.
Like with Titans it's done with an almost audible 'clunk' the way that Hunt was all about them remembering something dimly at first, and starting over by the end, then leading into the Rebirth issue and Wally basically jumpstarting the characters by depicting how they all used to be and sort of restoring it to that.
Likewise over in the trainwreck called Teen Titans, the last few issues and in the Raven opening montage... it's repeated several times how important the characters are to each other, but all I am sitting with is a sense of: "Thats nice... a pity you couldn't bother with showing us any of this."
Note: I think the cartoon (assuming it's the misnamed JLvsTT) make the same mistake, mostly with Damian who doesn't move more than an inch for the entirety of the movie before suddenly declaring "I'm a Titan!" in the face of being offered everything he ever wanted?