The C210 is a fairly high performance aircraft but being single engined it's something that new CPLs get onto early in their career so inexperience may be a factor. A bit like a "P" plate licence holder driving a V8. The landing gear system isn't the best design and there are numerous issues with it. IIRC the C210 is on BHPs avoid list for charters.
The C206 is a tradie's ute and the C210 is an HSV Commodore, whilst you can drive both on the same licence you need to know the differences.