Yep, even on the low end of the scale presented in the paper it’s 7 years. I don’t run aeration, but I do have an abundance of small HBG fry swimming around and GSH.
I’m running a feeder, but can’t really tell if the SMB are hitting the feed. Really getting the water flushed out this spring. Water has been running out the overflow pipe for over a month. Maybe all of the above mentioned will help extend the life to 10-12 years.
They will be monsters by then!

9 yr old pond, 1 ac, 15' deep.
RES, YP, GS, FHM (no longer), HBG (going away), SMB, and HSB (only one seen in 5 yrs) Restocked HSB (2020) Have seen one of these.
I think that's about all I should put in my little pond.
Otter attack in 2023