The logic for investment is buying low and selling high and currently Bitcoin has a new ATHs is it safe to encourage new investor to buy now seeing how high the price has gone? My fear for new investors is that the don't experience a dip after buying since no one is sure of how far the new highs will reach.
The risk was always a partner in all kinds of investments, if you investors understand the basic risk of investing in Bitcoin, then, there's no problem at all.
We can't predict what will happen next, even when Bitcoin was at the price of $30k everyone was talking about "
is this the best time to invest? " and then Bitcoin has been folded x times still asking and have fear to invest and yet they don't have the plan to invest because of fear.
So be it, and understand the risk, there's no safe at all, as long as you are holding until there's your profit come, you will be safe at all.
Others have set their target profit and held Bitcoin until it will reach the target, look around, Bitcoin has gained massive adoption and I think there will be new ATH will come.