That video pissed me off. Here was my reply to it:
”This is embarrassing. Designing a wind lever mechanism is a challenge in 2023, in a “modern camera”? No wonder the older engineers laughed at you. Take a look at magazines such as Popular Photography or Modern Photography from 1972, 1964, or even 1954 when Pentax introduced the first commercially successful SLR with an instant return mirror. Look at the mechanical technology that was being used then. 65 years ago. Film winding mechanisms have been around since the first Leica in 1934. If that’s too difficult, then use 120 film and a little red window to see the frame number like a Brownie 127-format camera. Really - just re-make the Pentax Spotmatic of 1964 and be done with it. Then you get the spiritual film winding you’re looking for, rewinding (!), metering, and all the millions of screw-mount M42 lenses that are out there. Plus, the user can set aperture and shutter speed. That’s it. Make that. You made it before.”