Let's not. There's enough overcomplicated nonsense examples of cybersecurity in movies as it is. If you could compromise a device via bluetooth, then you could exfiltrate data via bluetooth just as easily.

It's not completely unrealistic angle, you could pwn the speaker when someone is traveling with it in public and then exfiltrate data when it's plugged in a secure environment and you can't connect anymore

you could but I think the inclusion of lasers would make for a better spy / cyberpunk movie. Most "hacking" in movies are not realistic and for show but it being plausible is just a bonus.