Plus all the additional time wasted in planing/deplaning the cabin in general as you wait for 90%+ of passengers in rows ahead of you to grab roller bags from overhead bins. Including the time wasting bottlenecks of "overhead bins full, everyone else must now gate check" guaranteed to slow the last passengers from planing and then on deplaning the crowds stuck in the jet bridge waiting for gate checked bags.

(Then there's the factor of how much time and space all that also wastes at security checkpoints.)

Checked baggage has the efficiencies of forklifts and trucks and conveyor belts. Just as airlines fixed most of the problems with those systems and got them to be efficient beasts they decided to disincentivize actually using them by charging extra for what is the cheaper cargo space. I wish an airline would have the courage to reverse the fees structure and charge for overhead bin space instead. (But then I also travel with IBS issues and my patience in deplaning has been severely tested enough that I know not everyone shares quite my annoyance at deplaning issues in particular.)

I have never had a gate checked bag where you don’t pick up your bag at baggage claim except for regional flights on small planes where even standard carry ons won’t fit in the overhead.

And for the pedantic really small planes like Sansa in Costs Rica for their 30 minute flights between San Jose and other cities.