I have not read the article but will do so.
The Mooney is a superb aircraft, albeit I think it occupies a niche market which has been eroded by the Cirrus. The Mooney is quicker and more economical, but the speed differential has been substantially eroded and may no longer be enough taken with the other drawbacks. In a similiar vien I doubt the saving in fuel is a signifcant factor if contemplating a capital investment on a new aircraft of that order.
The Cirrus cockpit is large and comfortable (I always say built for fat Americans, but not a comment I would want to make on here), the Cirrus version of the G1000 is way ahead of the avionics fit of the latest generation of Mooney's and the aircraft is likely to be less costly to maintain. Cirrus's recent FIKI approval is the icing on the cake.
These issues will continue to make the market a tough place for Mooney but horses for courses it is a superb aircraft even if I think Cirrus have the edge in terms of the overall package.