writes:

In order to get a somewhat valid comparison.

What's invalid about comparing all Cessnas?

The numbers of both built are in the same ballpark and the ages are comparable
so the same percentage of both are likely still flying.

What evidence is there that older aircraft are not being flown?

Because no one knows how many of them are still flying.

Nobody knows how many of the new aircraft are flying, either.

If you had ever visited any real airports you would know there are lots of
airplanes that exist on the records but don't fly, or even exist anymore.

Why would Cessnas produced before Cirrus was around be especially prone to
non-flying status?

How about comparing Cirrus with Diamond? Both companies are about the same
age. Which has more accidents?