Not true google, amazon, Uber, and ect. All use java.
I would reccomend the opposite if you learn Java first its super easy to learn python but not vice versa.Python is far more simpler for beginners. I'd recommend you use it if you're an absolute newby with no prior experience with programming.
Kotlin has replaced Java as the defacto language for android app development.
Java will be irrelevant in 5 years time