Just taking this point on at the moment-
Assuming your numbers are correct and the site you use is accurate- that's assuming a guest goes to WDW and rides every ride in the park and not only that, but rides every single ride standby.
I don't believe that's typical. Also, that number could easily be reduced by making use of EMH or rope drop, and riding during slower times of the day such as parades, fireworks. The number you give is the absolute worst case scenario.
But even in the worst case scenario, if your trip is 5 days, then your standby wait is increased 32 minutes per day non-peak, 41 minutes peak. Per ride it's under 5 minutes per ride non peak- and 6 minutes peak.
When you factor in crowd increases and ride capacity reductions, it probably does come down to a wash with touring plans results. When you factor in time saved not having to walk to get a pass, walk back to ride it and the ability to cluster rides together to shorten your walk time, fp+ probably saves time overall.
At any rate, both sites are pretty close to the same conclusions after looking at it in more detail.