Are investors investing in Bitcoin at ATH now are fools ? Is there chance of major correction from here as prices have already peaked now.
As long as you are not investing because of FOMO or for short term profit. If you intend to have a long term bitcoin investment for 4-6yrs and above, then the price that you are buying shouldn't be a problem. This is why we have the DCA method of accumulating bitcoin, which gives us the advantage to buy bitcoin irrespective of the price.
Buying regularly using DCA helps you to balance the average price of bitcoin in your bitcoin investment, because if you are consistent, and persistent in it, after buying at the bull run, you will still buy during the bottom line of the next bear market, and so on. By next circle bull run, you will have some profits. Don't allow the price of bitcoin to discourage you and keep on waiting, because that is the worst of it.