We can't blame ourselves on what happened on the past events on bitcoin. We should be more speculative next time in dealing with bitcoin since no one can really tell the exact price of bitcoin from day to day. That is why we do research to have a greater chance to have a correct prediction. Those doubts did by many people are certainly not doing research that's why they regret it. If we really want to change our life through bitcoin then we need to effort.
I believe no one is blaming anyone here, OP just stated some inspirational thread that were created during its dip, and how people missed out on Bitcoin. I can see the point there, just hodl our Bitcoin since Bitcoin has capability to bounce back and break its ATH again and again. Though I agree, when we invest let us do a thorough research about the one we are planning to invest with. Do not buy because of hype, buy because you understand the market.