Are investors investing in Bitcoin at ATH now are fools ? Is there chance of major correction from here as prices have already peaked now.
We can hardly take you seriously since this is your only forum post and you did not even follow-up in the thread.
And, maybe you don't even know what is bitcoin or what would be the context for anyone currently buying bitcoin. You surely have not provided much if any context for your question.
There are some kinds of people who are foolish no matter what they do, because they make rash decisions, yet we should not presume someone to be foolish now merely if he is just getting started in bitcoin.
In regards to bitcoin prices, the only way to prepare for BTC prices to go up is to buy some bitcoin, and if are interested in bitcoin and you don't buy any bitcoin, then you are ONLY preparing for down, so if the prices do not go down, then you are not prepared for what ends up happening.
Surely we could look at previous periods in which BTC prices had reached an all time high and then there was an extended period of time of correction and then the BTC price revisited the previous ATH, and frequently in those cases the BTC price moved through the previous ATH and continued to go up. Of course, past BTC price performance does not guarantee future results, but anyone who might want to prepare for the BTC price to go up, might want to get some bitcoin in case the price does not come back down.
There are also ways to prepare for up and down at the same time, which would be to buy some BTC right now, and then have some money in reserves in case the BTC price drops from here, which could be supplementing the buy through DCA and/or buying on dips.. and in that kind of case the BTC buyer would be prepared for both up and/or down, which tends to be a better practice. Prepare for either price direction rather than just preparing for only one price direction.
By the way maybe we could go back to early 2013. The previous ATH had been $32, and in early 2013, the BTC price passed through $32 and then went up to $263, and then corrected back down to around $70 in mid 2013 but then resumed past the $263 ATH in late 2013 to reach $1,163 before correcting back down to $158 but then largely settling in the mid $200s in late 2014 and through much of $215... so then in early 2017, the BTC price went back through the $1,163 ATH and went to $19,666 in late 2017... and ended up correcting back down to $3,124 in 2018 and had another correction to $3,850 in March 2020, but then when it went back through the $19,666 ATH in late 2020, it went up to $64k in early 2021 and $69k in late 2021, before correcting back down to $15,479 in late 2022 and mostly gravitating back up to our current prices,
and so it seems that we may well be passing through a previous ATH again.. yet of course, there are no guarantees, so each of us has to figure out what we are going to do, and you are in more of a pickle if you either don't have any BTC or if you consider yourself a low coiner... and so if you are in either of those categories, it is probably better to buy rather than waiting around for price dips that may or may not end up happening.
Not everyone who invests in Bitcoin is pursuing short-term profits, there are some who want to invest in the long term, for example for the next 5 years or more. It's possible that they estimate that Bitcoin could reach $100K, so they dare to invest at the current price. So when they buy Bitcoin at the current ATH, they are not chasing short-term profits, as most other investors do, but they want to make profits in the next few years.
I would suggest that by definition when it comes to bitcoin, a person is probably not investing unless s/he has at least a 4 year time horizon. If their time horizon is less than 4 years, then more likely s/he is either trading/gambling rather than investing. So investors in bitcoin should have a 4-10 year or longer time horizon for their investment, otherwise they should probably call what they are doing trading and/or gambling rather than investing..
