You are absolutely correct!! I can tell you from experience. When i had my FJ i lifted the drivers side up and had the door open when i went to let it back down the jack dropped! Since the drivers door was open the seat took the brunt of the fall and not the door. So just some words of wisdom. Never trust a hilift. They are great but have damaged a lot of vehicles and people.
Hi-Lift jacks do not get much love. Most of the issues caused from dropping are due to sticking pins. Especially if the jacks are mounted to the exterior all of the time. Even keeping the pins well greased dirt finds its way inside. I always keep a can of penetrating fluid on hand. Before using the jack, rachet it up and down to see if the pins stick. If the pins stick, spray the crap out of them. Also make sure the tires are well chocked in case the vehicle were to shift.
