There is no problem actually when someone would be buying BTC when the price is already high as long as he would HODLING to it and never sell when the price is lower...that is essentially a big suicide and is not the best way to do business. Buy HIGH and sell LOW is just what we should be avoiding...this is a big slap on our face and maybe it would be better to never buy at all. Now, it is unfortunate that some people would be going along with the crowd and never have a plan or roadmap of what he is doing in the cryptocurrency market. Senseful investors will always BUY LOW, SELL HIGH. In case, the price is already high, one has to wait when it would already be possible to make ROI. As always never be allowed to be taken grip by FOMO and be swayed by opinions of others to one's detriment.