Is it paranoia? Yes and no.
If your computer is hacked, can the hackers look around your house or see you naked or whatever? Yes.
Should you be worried about it? No.
Why not? Because if they've hacked you that far, then they can already get your credit card number, facebook and email passwords, and anything else on your computer or that you type in.
If you get hacked, the camera should be the least of your worries. Bottom line, don't get hacked. Avoid super suspicious websites, use an adblocker like mublock origin, don't open files downloaded from the internet (including random attachments from unknown senders or spam from friends). Use security software I guess, or better yet, run Linux.
Disclaimer: I am not a security professional.