That sounds pretty dumb for someone who ONLY has around 1 BTC to be selling part of his BTC at $80k because he bought at $16k.. The guy is going to need more than just the fact that he is 4x in profits. We need more details. What is his income? Is the guy still accumulating? Is he accumulating BTC in order to get into dollars? What's his annual income? Even if his annual income is $10k per year, $80k would ONLY be 8x his annual salary... I question scenarios in which $80k would be enough.. and even if the guy had 2 BTC, that is $160k, that also seems like there would not be too many scenarios in which that would be enough.. but hey.. sure add some facts to flesh this out besides a mere assertion that his seemingly fairly whimpy holdings are 4x in profits.
Don't get me wrong. I am not trying to suggest that 1 BTC might not be a lot in some circumstances, but it surely does not seem to be an amount that is worthy shaving off some of it absent some further facts to show why it might be justified.
Also don't get me wrong, you have discretion to do dumb things, but I need more than just the idea of buying at $16k and selling at $80k...
For example, if the guy started buying in 2021, and his annual salary was around $20k, and so maybe he bought $30k worth of bitcoin through out 2021 with an average cost per BTC of around $40k.. so he got around 0.75 BTC, and then maybe the next two years, he put together another $40k and he bought about another 1.5 BTC.. so then when he gets into this year, he is starting to feel overinvested... so maybe in those kinds of circumstances, he could justify starting to shave off parts of his BTC holdings... his total of 2.25 BTC cost him about $70k (average cost of about $31,100 per BTC) and they are currently worth about $117k, and so nearly 6x his salary, and since he got into his investment so rashly, he might even already be willing to start to shave off some of his holdings.. because he is feeling over exposed to BTC, but he still might not feel like he is in a position to really shave off a lot because he feels that he has enough BTC, but he need to bring more balance to his life because he's got most of his networth in BTC. .. and yeah, maybe he already has an emergency fund and other parts of his financial life in order so he might be able to just ride out the investment, but he might also want to start to structure either to stop buying so much or maybe to structure some small amounts of sales as the BTC price goes up..
I was basically trying to say that the ones who have more than 1 Bitcoin can make some good profits if they sell out some of their holdings. Let's say if someone has accumulated around 2 Bitcoin or 4 Bitcoin during the dip of $16k and when continued buying Bitcoin when its price was around $25k, and they might have accumulated some Bitcoin during each dip by following a DCA strategy or dip buying strategy whatever we name it. Then such people can actually make some good profits if they sell some of their holdings at $80k let's say if someone who has 2 Bitcoin and he has bought those Bitcoin with average price of $20k a Bitcoin then that person can sell 1 Bitcoin at $80k. He bought 2 Bitcoin for $40k and now he's selling only 1 Bitcoin for $80k which means he already got his own invested money back and made 100% profit from his initial investment.
Now, let's say the same guy holds his 1 Bitcoin which is almost a free investment for him now because he already recovered his initial investment and even got 100% profit. He doesn't need to sell that Bitcoin now because he can now wait for huge intensity of the bull run where price of Bitcoin might cross $100k a coin or way more than that or he may hold that Bitcoin until Bitcoin reaches $1M. The same guy now has around $80k in his account which he can reinvest in Bitcoin or withdraw some of it to fulfill his other needs. Let's say the guy decides to withdraw $10k out of those $80k and now he has $70k which he can reinvest in Bitcoin again.
Now let's suppose that Bitcoin reaches $120k at the highest intensity of this bull run and once the bull run is over then Bitcoin can dip back to $60k-$50k values. Just for example if the same guy buys Bitcoin at $52k then he's increased his Bitcoin portfolio a little bit and also made $10k extra which he used for his other needs. That's case of the ones with just 2 Bitcoin what if the same person had 20 Bitcoin then he might end up making enough profit by selling his 10 Bitcoin at $80k.