Are investors investing in Bitcoin at ATH now are fools?
Your question is not a simple Yes or No. Anyone going all in and Holding at these levels is probably a fool who will panic sell at much lower prices. A savvy trader can start slow, saving funds to buy more at lower prices, and start to play the medium-term moves while holding a moderate amount. Now, add some income paid in Bitcoin and you are off to a great start.
OP asked about investors, and you responded by talking about traders.
Of course, everyone may well define investor and trader differently, yet I have personally come to an assessment that anyone coming into bitcoin with less than a 4 year timeline is coming into bitcoin with a trading mindset, so in order to be a bitcoin investor then there should be a plan to stay in for at least 4 years, and better yet to have a 4-10 year or more plan to stay in.
Another thing is that any of us can come into an investment like bitcoin with any mindset that they like and including a person could come into bitcoin with an investment timeline to plan on staying at least 4 years from any injection of capital that s/he makes, and at the same time, such person could end up changing their mind and choose to abandon the investment prior to 4 years.. .. .
So yeah, investors and traders do not seem to be the same thing, and surely there are some people who come into bitcoin and they are not really sure about their timeline.. and maybe they are not considering themselves as traders, but if they are not at least trying to plan out 4 years or longer, then I think by default I would still end up classifying them as a trader than an investment based on their failure to mentally commit to at least 4 years.
I think buying before 75k$ is not a bad idea because prediction says that bitcoin price will soon rise to 100k$ so if someone buy at 75k$ then still he will be in profit so I think that investment in Bitcoin at any cost is not a foolish idea but if we are waiting more and more that price will reduces and then we will make investment then this is not an appreciated job.
Let's say in the coming month or two or perhaps 3 months, a person has no bitcoin and the BTC price has gotten to be between $75k and $100k, then what is such person supposed to do? Wait for the BTC price to come down prior to buying? What if the BTC price does not come down?
The same questions for $100k to $160k - perhaps those prices within 1 month to 6 months. person has no coins? wait?
The same questions for $160k to $240k - perhaps those prices within 3 months to 12 months. person has no coins? wait?
The same questions for $240k to $540k - perhaps those prices within 6 months to 18 months. person has no coins? wait?
I understand the higher the price, the more justification to wait, but if a person has no coins, then is the answer still to wait? or not?
Maybe two more scenarios
The same questions for $540k to $1.25 million - perhaps those prices within 12 months to 24 months. person has no coins? wait?
The same questions for greater than $1.25 million - perhaps those prices within 12 months to 36 months. person has no coins? wait?