We'll obviously their data is crap if Mearls thinks heavy release killed 3rd and 4th edition.If you leave, don't forget to move your bookmarks.
Do you have access to WotC's data and surveys regarding this? They spent years compiling and analyzing data and determined from that to make 5E a slower release schedule.
Unless you have some evidence, your repeated complaint "I know better than they do!" is nothing more than your opinion.
I don't need the data, I can read the BS from here.