Perhaps, the start of investors diversification of their coins, after the initial buy-in via "BTC" from Fiat, before/during the early recovery?
And perhaps it is indeed a good choice to go for (selected - base on careful/thorough research) altcoins when buying-in during a crash? -- I.e. lower MCAP coins saw greater %loss would likely see similarly high %gains when the market rebounds? — provided that the project behind it is sound, that is. Finger crossed that this trend will continue.
It probably depends on your portfolio. I cannot tell the same for my portfolio. %90 of the coins that I own is red. Not so much down but still it is minus. I need to review my coins and replace some of them.