We may not see another major bull run that will take over from the current ATH of $64,863.10.
If you are already going to compare the halvings from 2016 and the last one from 2020, then at least take into account that ATH in 2017 was achieved only at the end of the year - so if we take that as a reference, then we have at least 8 more months until the end of this year - what end of the bull run are you talking about when he hasn't really even started yet?
Once the dust from the hype and overvaluation of vapourware (this time it will be so-called defi), we'll get back to solid basics.
Yes, something similar happen with ICOs in the past - people are too naive and have a short-term memory that will cost them dearly again in the end. When I just read how the OP thinks, then I can only conclude that some people have already drawn a thick end, and the game has not yet reached its peak.