Others prefer to have hobbies outside of coding, and that's fine.

Yup, I used to do side stuff but now I mostly tinker with servos, 3d printing, and mechanic work on my car. I can only ingest so much of the same shit

The good programmers I know have hobbies outside of coding too (gardening, retro computing, skiing), but coding is still one of them. If it's none of them, that's a red flag because it's never the case for any of the good ones I know.

You’re missing out on all the people who channel that passion into doing their job so they don’t feel the need for side projects

I'd certainly rather hire that person than someone who pours all their passion into side projects and none of it into their work.