Ploot = Diablo 3 outcome

I’m just curious where this number comes from. I’ve been trying to find the number of active D3 players for awhile now but without much luck.

And where does the data point that the failure of D3 is because of Ploot. I mean first, you have to prove it’s a failed game. Seasonal themes are still coming out for a game that is around 9 years old game. Second, if it’s a failure how do you know it’s with ploot and not something else, like lack of gear customization or skill diversification or lack of end game content?