... on his 7.1 and then the rear axle broke ...
I think 7.1 is a screw on freewheel, [7 speed in current Specs], not a cassette / freehub.
move up the price point to get those features , they cost more.
YGWYPF still applies.
the lowest cost components are made by fully automated manufacturing..
.. but they still shove the chain sideways.. their prime function..