Probably similar to why you can make the turn indicator make fart noises or have the car “dance” by flashing lights and opening doors and such. The hardware is there so why not. Utterly pointless features but atleast it’s something the competition isn’t doing I guess.

Tho I must admit that it was quite funny when I once heard a guy lock the doors on his Tesla and instead of the generick “click click” it said “quack” instead.