I strongly suggest at the moment to stay away from alts at the moment. Everything is going down and we are not clear what will happen tomorrow. Let the dust settle and we have plenty of time to decide whether to invest or not. Just have some break.
Your point seems to be valid but with high risk comes high reward. If you invest in a coin when it is 100% down then surely you get profit when prices goes up. Buying a coins when prices are at ATH or going up is a mistake many people made and must be avoided.