Because its a pain in the backside to extract them from a PDF file.
But basically the green line on the graph from cirrus pilots is the national average and the cirrus is above it. They decided that because the instruction flights and other GA have such a low fatality rate they would remove them which then brought the national average up to make the cirrus look safer.
The fact is though that the majority of the aircraft missed out will be in the +10 years old with steam instruments and age issues. Also as well several of the accidents/incidence have also been on instruction flights with the higher risk carried with that.
COPA Cirrus Pilot Proficiency Program (CPPP) - Cirrus Owners and Pilots Association
Formalised quality training like that in my opinion will do more to reduce fatalities than having a chute in the back. Linked in with a couple of hours abnormal procedures in the sim.
Funnily enough its basically what a commercial pilot has to do to renew their type rating in Europe. But we do also get a refresher every 6 months but without the rating renewal.
So if your really are serious about wanting to protect yourself and loved ones while flying go and do something like that course every year and an abnormal procedures sim session.
In the commercial world the sim sessions are tapered for your experience. Getting progressively harder as you get more experience. There is also nothing to stop you requesting situations which you have experienced in the last year to revisit them to see if there was a better solution to the one which you used.
Perfect example for this chap if the reports about the runway change are correct. Get into the sim set it up again and this time have a play with the different ways of dealing with it. Then go flying again.