In that context, I believe people will accumulate Bitcoin when the market is down and they will buy aggressively at that time. That's quite a good thing if you have a bigger budget. But as beginners, maybe we will start investing with varying levels of our financial strength to our goals in 1 year or 2 years. Patience is the key and playing buying and selling and buying and holding tactics is up to each individual.
For sure, people would invest in Bitcoin aggressively when the crypto market is down but are they going to wait until that time comes before they invest, even when we don't know whether the $35k is the limit price bitcoin can fall to before it moves higher in price before the bull run season.
Thank goodness, for I am not among those who want to wait when the market is down before they invest. For me, I am investing the little money I have in a DCA approach
We can see how the Bitcoin price has been hovering around $36k to $38 for weeks now, and nobody knows if the Bitcoin price will fall below $36k in price. Instead of waiting for the Bitcoin price to fall before you can buy it, which might lead to missing out on Bitcoin because Bitcoin does not fall to the price of your entry point. You can divide your money into three and buy Bitcoin with the three strategies which are buying the Bitcoin dip, buying when the Bitcoin price is at its peak, and buying Bitcoin with the DCA strategy. When you use these three strategies to accumulate your Bitcoin and hold your Bitcoin for 4-10 years, you will see that Bitcoin will do good.
For me, I don't think there is any need to divide the money for investment into 3, because if you want to invest in an investment, you should put in mind that you are about to risk what you can afford to lose. But if, by any means, you know that you don't want to lose anything in an investment, then there is no need for you to invest.
Also, it is not a must to buy the dip, so I don't think there should be any need to wait for the dip before you can buy Bitcoin. As I don't really think that Bitcoin will drop back below $34k or more, so for me, I would say it is good to buy now (most people will say buy now or never) as Bitcoin is an opportunity that investors should take good advantage of, I don't see any reasons why they should wait for the dip before they buy.
Talking about the DCA, yeah, it's good to apply the DCAing strategy to Bitcoin investment by investing the little money you can after your all of your expenses and all the rest weekly, even if it's $10 per week and constantly do so for 4 to 10 years, as you have said (so, as we have 52 weeks in a year, let's multiply 52×10 (which is 10 years)=520, so it is still not UpTo $1000k).
However, as time goes on, within 4 to 10 years, the investor my get more money, so he might try to increase his investment rate (maybe $50 or $100 weekly).
There is a situation where you will find yourself, the need to divide your money into three equal parts in other to accumulate Bitcoin will be needed. For instance, if you want to buy Bitcoin at $36k, and the current price of Bitcoin is $40k, and all of a sudden the price of Bitcoin moves to $46k, instead of you waiting for the price to dip to $36k so that you can buy it. If you have enough money you can divide it into three equal parts so that you can use it for a lump sum buy, buy when there is a dip in Bitcoin price, and buy with the DCA strategy. Buying Bitcoin with these three strategies will help you not to miss out on Bitcoin because you are waiting to buy Bitcoin at a lower price.