The biggest thing I see problem and complaint wise is people using tillers for gungho, new ground breaking of a garden spot.
I used my tilers for spring work-ins of compost and fertilzers, and for weekly weed cultivation/maintenance between rows.
But, ya know if you dont have access to a tractor for the initial groundbreaking, you just have to take your lumps. BTDT.
I had a crazy dope head cousin wanted to borrow one of machines to try and find the lid to his septic tank. hell naw