Bluetooth provides another vector of attack for the convenience. There is already quite a list of known vulnerabilities. Yes, many of these get patched but as the open standard evolves, so do the hackers. You could turn it off entirely, plug in a cable & forget all that if all you wanted to do was use audio/video.

Yes

Absolutely

Yup. And for good reason

like I said, I personally don’t care, but it’s a nice port, pretty ubiquitous and it’s nice to have choice for customers.