Surely even those buying for long term HODL would be tempted to sell if the invested $8350 now and had the opportunity to sell at say or example $20,000 in the next bull run.
I find it interesting you think people would sell when the price only just reached the peak of the last bull run. Anyone who did that would miss the vast majority of the bull run. In 2011 Bitcoin pumped to over $30. On the next bull run it didn't stop at $30, it went to like ~$250. On the next bull run it didn't stop at $250, it went over $1100. On the next bull run it didn't stop at $1100, it went to $20k. The ATH from the previous bull run is the launching off point of the next bull run, $20k would be the absolute worst time to sell because in less than a year later you'd very likely be able to sell for several times that price. So I surely hope that nobody buying now would wait all the way until it hit $20k, and then sell just before most of the gains happen! $20k might be a year from now, but $80k-$100k might be 2 years from now, selling at $20k would be terrible timing.
As for me, I figure the current market cycle should go to high 5 digits or possibly a bit over $100k. If I sold at high 5 digits I'd be financially set for life, so it makes sense for me to manage my risk by selling as it gets up to high 5 digits. I will then diversify into stocks and real estate (because right now my investments are 98% in crypto and like 95% bitcoin) and leave enough set aside to load up on Bitcoin again during the next bottom as I did on the first few months of 2019, and do the whole thing over again shooting for maybe a quarter million BTC price which would probably take a couple more market cycles so that might be in like a decade from now.
So I'm not a super long HODLer right now just because I will sell when moving my Bitcoin to income producing assets would allow me to live entirely off that income, because investing is all about managing risk so it'd be greedy and stupid for me to not sell at that point. But I am a HODLer because I'll get back in after the following crash and probably hold for a bunch of years after that (actually, hopefully by then it'll be pretty easy to spend Bitcoin in a wide variety of places so rather than selling I'd probably just spend my Bitcoin over the decades assuming the USA changes its tax laws so it doesn't make it impossible to keep track of tax liabilities by making us pay capital gains when spending bitcoin).