The purple dots and lines are drawn based on the 'elbows' of each cycle, meaning where it stopped going sideways and started shooting up. Silk road does not count because it was an outlier caused by an unusual circumstance, placing a flashcrash in a very odd location, and only lasted for one day. I do not use silk road data in any of my charts.
Ok understood, but that could also mean a return to the previous (flatter) angle, in case rally starts from these current levels.
If it drops to 150 and rallies from there, that would mean a negative inclination for the current leg, something that has never happened so far, and that would definitely signal a fundamental decline in adoption rate - something that is just not there.