Sure, many people don't care about the prices involved, they just want to invest for the long term to make a profit and I think that is a good strategy, because sometimes when you see the prices of bitcoin increasing you will be thinking when ever you invest on it, the prices will probably decrease and you will lose your funds, but when you make up your mind that your investment is for the long term and whatever happens, you will just sell your coin and leave it for long term thing he reach your specific time before you can sell the coin.
I just had the talk on the same topic you are talking about now, I can't agree more with you because if a person has plans to hold BTC for like next 4 to 10 years, or less. Then a proper risk management strategy would be enough to accumulate BTC at whatever price. Because in the end, that person will be in profit. Profit is all we (investors) seek, but it should be worth it. Many people are so enthusiastic about BTC that they don't consider any other token, and they think investing all of the funds in BTC, can make you rich. I don't deny it, but diversification is also one of the main part in risk management.
Anyone who is blaming people for their losses is not smart enough, which is why they are losing. Since you have identified and know how to do it, it is better for you to make your own research without depending on anyone,-cut-
You are right, we should DYOR, never blame others, if we start to blame others, then whenever the market dumps I should blame the sellers because they are the ones who panic and burst sell, which dips the market, so I should blame them. Haha. Why do I blame myself that I should have predicted the market before? I should have done my homework so I could save my funds and make some profit.