The trailer looks great!
I think using a different voice actor is makes some sense as this the "real" Buzz Lightyear, not the toy Buzz Lightyear.
It's not the first time someone else has voiced the character, so people are trying to make this a big deal when it's not.
If Disney/Pixar had a concern about Tim Allen's politics, then why wasn't he replaced for 2019's Toy Story 4?