I am myself a terrible estimator of the angle by sight. Yes, unless people set ridgelines many are hanging with more sag than they think.

If sleeping through the night is an objective, then one approach to success is sleeping in the same bed, which is to say with the same setup / sag, whatever it is.

Another is Shug's: Hike hard, be very physically tired and quite tolerant of any set up, falling asleep and sleeping soundly.