Fjodin said:

Adywann, why you have decided to return original Boba voice... i mean he is a clone of Jango and his adult voise should be like jango and clones... or not?

Basically, it comes down to Temura Morrison's Boba voice was literally phoned in, and he just didn't have the same emotion for the lines. So Ady's logic is who's to say that clones sound exactly like their "parent" or that Boba's and Jango's helmets maybe have a voice modulater built in. The plan is to redo the voice of JANGO in the prequels to better match the OT, as it should have been in the beginning.