I agree with you that buying now is a good thing to do and it can become profitable. But I will prefer to advice people to DCA instead of buying at once. I advice some people to DCA in a a way that if bitcoin fall to a price, that they should buy more. They have been doing it since bitcoin fall to $90000. It is something that has been set on the exchange as limit order. DCA is a good thing to do.
This is a very good opportunity for DCAers to buy more and increase their DCA amount but it can be of more advantage if the price continues to DIP so that when it start rising back, they will make many profits from their investment especially those who will want to sell when the price regains strength. Anyone who also decides to go an all in it's not also bad at all because the price may not go lower than the current price so whichever way anyone chooses, let it be with a discretionary income and not an amount kept for other necessary needs of life.