Because when new bull run will arrive there will be new shitcoins and your shitcoins will end dead or delisted from exchanges which can lead to 100% loss.History is always repeating.
5,5 years old chart:

Surprisingly some coins from this chart are up from then but volume on exchanges is low,so holders of these coins are truly bagholders.
As I look at in the given example I can't see any of this coins is performing well and it's been replaced with another one if we look at in the current state of coinmarketcap, I've been holding a lot of tokens nowadays due to market condition, maybe I would be sorry but next coming months.