Relying only on buying the dip can really slow things down, because the market does not always give you the kind of dips you are waiting for. If someone keeps waiting, they will just end up missing a lot of accumulation time when they are suppose to be Dcaing and still hold less Bitcoin at the end.
That is why combining it with DCA is more better. You just keep accumulating steady, no matter the price, and still have some funds ready when a real dip come. It helps grow your position without trying to time the market.
Waiting for a dip is not a bad thing but it does not mean that you should stop investing completely. Rather, you should continue to invest regularly through the DCA strategy and at the same time wait for opportunities. Just like we keep an emergency fund, it is wise to keep a separate fund for use during downturns.
If you want, you can save a part of your income for the downturn, which is the mark of a conscious and realistic investor. But if someone does not invest just waiting for the downturn, then this is nothing more than thinking detached from reality.
Why waiting for the dip when you don't know the time it will come and how much it will cost, yes it is not a bad idea, to keep extra fun for the dip but it should not be done from your present income, that is trying to pull out a certain amount or halving the original fund which you were supposed to use in the ongoing, persistently accumulation of bitcoin or rather out of your present income or an increment in your income but from extra job or investment you incure then you can from there decide to set aside an extra funds for your unknown dip, but remember it is not advisable to wait for the dip because that amount of funds you have reserved to buy the dip if use it to continuously accumulate bitcoin it would have outweigh the initial amount being saved before the dip comes.