I doubt if there are investor that buy Bitcoin aggressively when the price is high rather what they do is accumulate using the DCA method because the DCA method help one to invest regardless and then whenever there is Dip then they will take advantage and double or buy aggressively. Buying when the price is high doesn't look or seen strategic and no matter the capacity of that investor buying aggressively when the price is high look unprofessional because the fraction of Bitcoin one will buy when the price is high and the one when the price will go down will not be same.
don't doubt because real investors who are investing in bitcoin for long term 5 to 10 years or longer buy aggressively at any price level, only those investors who there focus is on short term are the people who don't buy aggressively when is high, so don't be confuse to confuse others especially newbies, because you can buy aggressively at any price level if your focus is on long term holding.
We don't have anything to doubt or questioned someone if they are buying when Bitcoin bullish trends occur. We could actually see the sentiments since that give us an idea about what's really happening right now.
Also lots of discussion about that they are continuously buying that's why there's no reason for us to doubt about that situation since long term holders actually don't care about the prices but rather their main intention is to buy Bitcoin at whatever price it is since the main intention is to accumulate as many Bitcoin as they can while they have money to spend for this coin. What I doubt that they worry to much about those dips since for sure this is the less concern of long term investors. I encourage people not to have doubts on Bitcoin and buy then HODL since this is best decision to do with this coin.
If only those investors who invest consistently did not have so many problems with the price of Bitcoin. If those investors had so many headaches, they would not have been able to maintain their investment continuity for such a long time and would not have invested in Bitcoin with confidence. However, the main problem of most investors is the fluctuation of the price of Bitcoin. Apart from professional investors, those who have just started investing or are planning to invest, at the beginning of their investment, they think about one thing: what is the current price of Bitcoin and when will the price of Bitcoin come down from the current price. There is enough reason for new investors to think like this because they may think that the lower the price they buy Bitcoin, the more profit they will make, but they may not know these things that the Bitcoin market can happen at any time, so many opportunities are missed by waiting for the Bitcoin market to come down. However, this does not happen in the case of those who invest consistently.
Fluctuations in the market price was never their problem, this is only accountable for newbie investors. If volatility of bitcoin was the problem of those early birds I don't think any would have successfully held their coins until today. When you have understand how the market operates and the major trend of the market it's easy for you to understand that bitcoin from a higher time frame is headed upwards irrespective of those minor bearish trends that tends to weigh newbies to panic and sell. When using the DCA strategy to accumulate there is no need to develop doubts to weather or not to invest during the peak price as long as your goal is to invest for a Long term, though this might be a problem for newbies but as time goes by they'll adapt to the system and understand that those are just little insignificant moves in bitcoin's major trend.