I had a similar thought untill I read that actually for or people with motor/muscle issues issues, a push button or something like the lever in the above which

I had a similar thought untill I read that actually for or people with motor/muscle issues issues, a push button or something like the lever in the above which doesnt require physical strength is much easier. I think the original introduction of the button was due to accessiblity. my understanding is that on newer planes they are trying to move towards a similar system for the same reasons.