Those who often observe the price in a matter of days are traders who are turning their money for a small profit, while Bitcoin investors do not often see this because their goal is for long-term investment so they are not too worried about the situation and also never consider price fluctuations as an obstacle to their investment plan. And if you want to be an investor in Bitcoin, of course you don't have to pay attention to it all the time because you only need to prepare funds to continue buying for your investment plan in the future. Moreover, if you are willing to be patient while making accumulations to increase the amount of Bitcoin in your own wallet, it will certainly be very good for you personally because you will be luckier when Bitcoin experiences an increase in price in the market.
Observing the market is quite different from analyzing and studying the market and so not only traders observe market even investors do observe the market so don't get it twisted. Traders turning there money into a small profit is not as easy as you saying it, they don't turn there money into small profit rather they intend to..., that is they only have that in mind but making the small profit is not easy it is possible that before they will even make the small profit they might have spend more than the profit they will get. So, instead of making losses before getting a profit while not just keep accumulating little by little for a long period of time and perish the thought of small profit which is not even certain.
It does not matter if you call it observing the market or analyzing the market, such laborious exercise can be completely avoided if you invest in Bitcoin using the DCA method. If you keep observing the market as an investor, there is a high chance you will be pushed to take irrational decision or emotion driven decision that may end up hurting your Bitcoin accumulation process. One of the greatest progress I have made in my Bitcoin accumulation is using the DCA method which have solved the problem of me constantly monitoring the market price hoping that it rise after I might have exhibited FOMO. The DCA method helped me to relax and only visit the chart around the period I want to buy and hold and with this method, my mind was never on selling but buying more.