If the number of samples is very low then the saying wouldn't apply yet. If you do self-fund a lot of flights then yes way, pal. Wasted unpleasantly-spent time is money too, if there's enough of it.
Let's make it a direct tradeoff. How many extra hours in an airport is worse than missing a flight? I'm sure there's a number for that. I bet the vast majority of people would answer within an order of magnitude of 100 (so between 10 and 1000 hours).