No, that was for Franklin Half-Dollars. It was an infamous Franklin Gradeflation Thread that apparently had many victims, maybe some here.
"I have seen that happen too with some CC Morgans and a few older half dollar coins, typically an OGH with a CAC, mostly at the spike earlier this year. Collectors seemed to go ga-ga over them even if they paid more of a premium than a grade bump would give you, so I avoid those like the plague. I think it may be more to do with the older holders and change in grading standards, and it may be happening less often now with ppl pulling back on what thay are spending.
The OGH might indicate that a coin by itself was conservatively graded decades ago and might deserve a grade bump, with or without a CAC. But OGH and confirmation by an experienced grader, with or without CAC, I could see the price jumping to the next grade level for some coins. Don't doubt it hasn't happened.
I just haven't seen it for the Saints I track closely. But most are recent holders, not OGH. OGH + CAC (I don't think you'd see OGH and a "+") might be enough to get you a 1 grade bump. But if that was the case, wouldn't the Gold Bean be there to indicate too LOW for the grade instead of just SOLID for the grade (as a Green Bean indicates) ?