So me being me I had to find out if my lazy assumption was actually for real or just some kind of cognitive bias.
I did some very rough and basic calculations last year and it turned out I was right, it was indeed the oldest WSC main event since the mid 1980s.
This year I decided to go the whole hog and improve my rough and ready data collection from last year and develop it into something much more precise.
Now that all the people are known for 2021's WSC main event I can now also add in this year, which turned out to be the oldest main event since 1982.
Here's the graph:
Full rules and details of workings available upon request as well as the exact average age right down to 5 or 6 decimal places.
Bizarrely enough, and I had to recalculate these years as I couldn't quite believe it, two of the years provided exact totals for the average age: 1995: exactly 28, 2010: exactly 32
Some fun information that naturally arose from this investigation is the following chart, which provides the entertaining information about who was the old crone everybody thought should've retired years ago, but still keeps winning matches, and who's the one to watch next season:
The main point of interest I gleaned from this chart is that none of the class of '92 have yet to achieve the status of Grand Old Man of any main event yet, and judging by the ages of previous entries, it will be quite a few years yet before people should be writing them off as being 'oldies'. I'd say we should be expecting to see both Ronnie and Higgins, and possibly but maybe not Williams, for at least the next five years unquestionably.
People definitely shouldn't be speculating on their age versus retirement until they've both had at least a couple of GOM credits.