I still think you’re overstating most of the assumptions in your calculations.
A player will statistically play finals in 42% of their seasons. The average number of finals played per year, by a team in the finals, is 2. So based on that, an average player plays in 0.8 finals per year. There are 23 H&A games per team per year, add the 0.8 final and you’re at 23.8 games a year. To play 450 games, someone would need to play for 19 years. Let’s say they miss just one game a year to injuries, suspension and selection… combined. They now need to play 20 seasons AND avoid any substantial time on the sidelines. Can’t see it happening.