In addition to what you have said, if someone is saying that the reason why the investor should monitor the market is to know when to take a buying advantage, Instead of continuously monitoring the market, and going through the emotional torture associated with it, the investor should set price change notification alert on, and set up that price level that he should be notified. So that once bitcoin hit that price level that the investor has set up, he will be notified by his exchange or wallet app.
This is more effective way than for the investor to be updated about price changes, than continually monitoring the market. We live in a world where technology has simplified everything, unless the investor has other reasons of checking the market, other than just knowing when there is a significant change in price in bitcoin market.
It doesn't even make any difference, what if you do not get any notification of the actual price you think it is good for you to buy bitcoin that means you will keep waiting for the price to fall so that you can bitcoin. Both monitory the market and putting notification of price to know when to buy don't really change anything, they can make one not to even invest in bitcoin at all. The reason why many normally miss opportunities of investing bitcoin is because they always want to buy at a time and price that will suit them and waiting to get the price they may end up not seeing such price because bitcoin can't be predicted.
Just buy bitcoin when you have the opportunity to buy, waiting for price can be delaying which you may never come across and at the end of it all you will still regret not buying when you had the opportunity to buy.