These are the thoughts and words of a trader, not a bitcoin investor. It is appalling that some people that pose as investors still possess trader's mentality to a great extent. waiting for the price to dip before accumulating bitcoin is a trader's instincts, else how do we explain trading apart from waiting for the best opportunity to enter the market in the right price position and possibly exiting when short-term gains are achieved. You can see the correlation between such mindset and trading mindset. It is high time people give up on the trading mindset and pickup investor's mindset which is aimed at accumulating more stashes of bitcoin and targeting at accumulating a definite quantity of bitcoin instead of just focusing on the pricing as determinant factor for accumulation.
Dips are rare opportunities to accumulate more bitcoin at low prices when it presents itself. Waiting for it entirely is a bad investment practice and you can miss out on accumulating good stashes of bitcoin and increasing your portfolio regularly. One funny thing with hoarding fiat and waiting only for the dip is that you might end up spending the money on frivolities and not finally actually buying bitcoin with it.
A person vouching for Bitcoin price prediction is not wise. I can say nothing but idiot to anyone who waits for Bitcoin to fall and sets a certain time. The reason for this is very simple, it is impossible for an individual to predict the Bitcoin price. If anyone predicts for sure then he is a hypocrite, we can expect from Bitcoin but not the future.
Even though I understand your point, I think your choice of words are too harsh. Remember that we have many players in the Bitcoin market and weather you chose to believe it or not, there will always be people with various interest and expectations from the market and by extension, their action will shows that and it all depends on the level of information at their disposal. You are buying through the DCA method or any other method and holding for long simply because you are aware of the benefits and you decided to act accordingly. There are people that are yet to learn about the DCA method or any of the methods that makes buying Bitcoin easier and are doing something different, that does not mean that they are idiot.
If a person has the mindset of being an investor then he should not pay attention to price forecasts and prices. Because an investment goal should always be towards investing. They never look at the price. That's the mindset we get from a trader, a trader's job is always based on price. You cannot be a good trader if you do not understand price movements. You may say, because they understand the price movement, it is easy for them to predict, but you have to understand that an experienced trader also faces losses many times. That is, it is not possible to predict for them. So if you want to become an investor, you need to change your mind-set like a trader and focus more on investing. Always be interested in buying instead of waiting for the price to fall.
Looking at the price always is indeed a bad practice that should be avoided because it has a way of stealing the peace of mind of mind of the investor and shows that the investor is not much confident in Bitcoin or is not thinking long term. However, some persons using buying the dip method can also check price one in a while to know where price has reached if they do not want to use limit orders. We cannot condemn them for using this method provided their plan is to get the best market price and HODL.