To think Mr Cameron is being unreasonable re Wales?

The current government has cut the amount of money that supports public services in Wales. And now he is lashing into those public services:

www.bbc.co.uk/news/uk-wales-politics-26956254
www.walesonline.co.uk/news/wales-news/trade-unions-urge-david-cameron-7375563

He described Offa's Dyke as "the boundary between life and death"
This is shameless scare-mongering.
He also, presumably, does not like the fact that there are now several versions of NHS in the UK. The English one that is being contracted out as fast as possible. Plus the Scots, Welsh and N Irish versions, which are not the victim of Hunt's "reforms".
The Nuffield Trust’s 10-year studies of NHS services across the UK concluded that there have been significant improvements in NHS services across all four countries. It also found that “no one country is emerging as a consistent front-runner on health system performance.”