Clever step stool, string and all.
The guy is obviously in pain. Bad knees/ankles/hips?
Sure, he's carrying too much weight - hell on joints over the years.
I've had 3 joint replacements, and I'm underweight. No doc ever said I should lose weight, lol!
My pants waist size is the same as when I was in college, 40 yrs ago. Joints wear out.
As a kid, I loved Rube Goldberg contraptions. And the game "Mousetrap". Both those date, me, lol. His step would fit into that.
Seriously tho, that guy has a physical job, probably since he was young. My knees hurt when I saw him gimp away.