Ask Hans Zimmer. Legend HZ was designed to his specs. I guess he didn't feel the need for Dune 3's LFOs to be added. The man's body of work would indicate he knows what he's doing so perhaps he's more focused on composition than modulation.
Your opinion is obviously not shared by the people who created Legend HZ. If it's something you feel strongly about then post at the Synapse forum where your opinion is more likely to be seen and addressed.
https://forum.synapse-audio.com/
