Kinda, I had no portfolio up until early 30's then was 90/10 equities/cash until leaving the workforce.So you had 0% of your funds in equities in your 30's (and the rest in bonds), then you ramped up your equity percentage to >80% near retirement?
Could it be that you are plotting the VALUE of the investments that you have in equities?
Yes, its value. If you scroll down the article you'll see the left axis is value (blue line) and the right is equity exposure %
https://www.kitces.com/blog/managing-portfolio-size-effect-with-bond-tent-in-retirement-red-zone/