I don’t think it affected it either, but what I think @franky might be saying is Universal wants Dreamworks exclusively at their parks, which means they want all the non-Universal parks to remove Dreamworks, including Dreamworld. Remember the deal was made before Dreamworks was bought by NBCUniversal (land opened in 2012, Dreamworks acquired in 2016).
A similar thing happened with Marvel, and all parks (excl. IOA) have removed or are removing the Marvel properties because Disney wants them exclusively at their parks, as well as Simpsons rumoured to being removed in 2028 at USH/USF at the end of the 20 year deal between Universal and Fox (similar scenario here)
And that is why I think Dreamworld were forced to go to non-IP/ABC Kids rides, because:
Disney/Pixar/Fox rides are mostly at Disney, and will most likely not be going to third-party companies
Universal/Illumination/Dreamworks rides are mostly at Universal, and are being removed from third-parties (like with DW)
WB/Hanna-Barbera/Looney Tunes as well as Nickelodeon rides are at Village
So if you remove them, you basically have only Sony Animation. And even then, 2/3 highest of the grossing franchises (Spider-Verse, Smurfs, Hotel Transylvania) have seperate theme park rights. Add to that Peter Rabbit, Goosebumps, Angry Birds, Emoji Movie and Aardman theme park rights most likely owned by seperate companies, you basically only have Hotel Transylvania, Open Season, Surfs Up and the Netflix films.