The problem with this idea is that you assume that every cycle is of equal length. This is clearly not true. The cycles are lengthening and the top will most likely occur in middle/late 2022. This leaves room for the anticipated movement down to 23-30k which would find support at the bottom trend line and has so far always occurred in the past cycles (it is then when the last phase of the bull market begins). But I guess this doesn't matter for everyone that is hodling. However, I think there could be one last good buying opportunity.
Yeah, hopefully one day a bull market that just never ends is on the cards.:D