To be fair to this racist moron, there is a difference between mainland spanish and latin american spanish. To be clear I am not justifying his dumbass comment in any way.
You can via adb ( android debug bridge ) , no root needed, but you need a pc or shizuku. Although if he has a pixel device he should just install GrapheneOS imo.
Edit: puxel -> pixel
Being pedantic does not exactly give the best first impression of a community.