For example: "Constraints scale better because they don’t assume knowledge. They are adaptive. They respond to feedback. A small team that decides, "We will not hire until we have product-market fit" has created a constraint that guides decisions without locking in a prediction. A founder who says, "I will only build products I can explain to a teenager in 60 seconds" is using a constraint as a filtering mechanism."
I think sensible constraints are based on knowledge. Goals can also respond to feedback, not be indefinitely locked-in. But they do differ as tools.
The small team that decided to not hire probably created that constraint to get to some goal, e.g. profitability, and the constraint is based on a prediction about what should work best.
Similarly, the 60 sec constraint probably serves some goal. Why are goals so bad again?