While I agree that DCA in a dip is one of the best strategies, it's worth remembering it only works in long-term up trends, as is the case with all DCA in all assets. Below $8.3K for example, the average price of Bitcoin since 2010, this becomes debatable if Bitcoin is still in a long-term uptrend, as DCA effectively fails in the short-term. This is why there will be others who will wait for a confirmation of a low, or least a high probability that a low has been reached, as if worse case scenario Bitcoin goes much lower than most people expect is possible, they will be in a position to BTC at much lower prices, at a much later date.

Hence, the only issue with averaging between $10K and $20K, is assuming $10K will be the low. As if it's not, a $15K average won't seem like a great price if a longer-term bear market begins. I'm not even suggesting this is a likelihood right now, but only outlining that it remains a possibility (as it has always been for a decade now), but more so that there will be investors who will remain on the sidelines because they'd much prefer to buy Bitcoin 20% up from the lows, even 50% or 100%, if there is a much better confirmation of a trend reversal - knowing that they could still end up buying below $15K (even if unlikely).

In reality, a multi-decade averaging plan should include buying Bitcoin from $20K to $1, as opposed to limiting the lowest buying price to a level that seems likely for a low.