who's going to complain more, old investors who has been hoping for the price to continue going up or the new ones that just saw it getting to $70k and all of a sudden it went back to $50k?
If you are asking between old and new investors, who's going to complain more about the fluctuation of Bitcoin then I'd say that new investors are more likely to complain more because old investors has been in the market longer and they know how it works. An old investor would feel disappointed and frustrated but only to an extent because they are sure that Bitcoin will always raise and they will never sell off their hodlings out of panic and fear of losses but a new investor knows absolutely nothing about how the market works and are more likely to experience the sense of loss or disappointment and potentially regretful about investing in Bitcoin as they were expecting Bitcoin to continue raising or at least be stable at the top and could be forced to sell their hodlings fearing further price drops.
Yes it is true that new investors sell their investments on impulse. That is why those who are new to investing are advised to acquire knowledge and even analyze investments properly. A new investor may not complain about the ups and downs of the market if he has a good grasp of the investment material before investing because he will be experienced.
Moreover, those who invest in Bitcoin, whether new or old, must be patient and remember that even if the price of Bitcoin falls, there is a possibility of a quick recovery. So even if the price of Bitcoin falls in the market, you should invest regularly with funds that are close without regret or even take advantage of the lower market, so that you can buy and hold more.