Exiting does not make sense to me. I don't see the point in exiting, ever. That whole mindset is for people who don't really believe in Bitcoin's potential, or just don't understand it. In the future, fiat money will cease to exist. If national currencies still exist in some form, their value will be based on Bitcoin. This is serious stuff.
Yes total exit among all cypto currency will not make sense in this age. Unless you exit for some personal reason due to money requirement it is fine else it will be a loss of opportunity for them in order to make more money than another way they could have made it elsewhere.