Such a strategy will always be relevant. We are speaking more today, when the market is completely crushed by bad news and whale actions. The best strategy at the moment is to be patient. In spring, in my humble opinion, everything will grow. In spring everything grows and the crypto market also).
I like the usage of the metaphor lols , yet that's not how it always works my friend . We certainly have identified patterns such as prices dips in the beginnings of each year and the flourish phases in mid to late summer , but that what always happened when cryptocurrencies were considered as a non world wide known industry .
Nowadays with the huge increase of the users base and the continuous popping of ICOs here and there , along with new measures taken by governments each once in a while ,things can't go as expected to be anymore .
Absolutely, patience is a virtue.
Hold for months at a time if you want to profit.
This won't apply to all coins , it might be a useful strategy for the top 10 coins which already have a lot of adopters and gets interested in by whales periodically , but with new ones , holding for too long might just turn your invested money into ashes .