Yes, that's precisely what you would experience according to the paradox described in the post

When 737 Max’s were…having difficulties, Alaska Air offered to reschedule your flight with no penalty. We flew anyway. It was glorious. Many rows with one person. Completely empty rows by the bathrooms. My spouse and I had a three seat row to ourselves. It was flying like it was 1999 again.

(And this was Seattle to Orlando, not some puddle jumper to Bumphuck, Nowhere.)

It really depends on where (and when) you're going. I've had a decent number of partly full flights going to oddball small airports. But the big hub-to-hub flights tend to be nearly if not completely full.

I have this quite a bit when I fly home late at night.