I’m guessing he was referring to the actual practice of a gym doing something like that. I’m sure there is whatever statement in the gym contract that says that they can change access. I wouldn’t know. I just use the gym in my apartment.
In practice, most businesses will work to accommodate you if there is a change like this and you can’t adapt. Someone else mentioned that their gym has an app and it doesn’t work all the time and have to use fobs still. Most managers will work with a customer and take care of the few that need extra attention.
My personal method is to do it in the shower with soap and water. I tend to spread some of the skin out in order to get the sides smoother. Basically around the balls first. You can hold them slightly away or to the side while you take care of the part you are focusing on. I do the taint as well.
For the centerish part of the ball, I normally hold it around the base and that smoothes out the skin on the balls. Then I carefully shave my balls. You can move the flattened skin around the ball inn order to make sure you got everything.
I would say if you start getting ingrown hairs, you might want to just keep it short instead of shaving, but that’s your choice.