Before mega pixel didital, quality of a 6x6negative or transparency is unbeatable, especially if you need to crop your image!
Of course you can crop a 35mm negative in the darkroom, but you will not be able to match the image quality of a medium format negative!
In this respect, the square format of cameras like Hasselblad; Zenza Bronica C and the Mamiya C220 are perfect. They all used 120 roll films and produced a 6x6 image. In the 70s and 80s, I have use all of them ;)