What's are the goals of a true investor if not got future profits and holding for long-term, every true investor is required to be patient and stick to the goal except maybe their ideology is to invest in Bitcoin to take profits and buy back when the market is down, that's a trader mentality my dear, if you're goal is to invest for 5 years then you sell before then it means you're going against the concept and your own goal every true investor should stick to the plan, be patient and allow your investment groiw before rushing to take profits.
We've learnt that the best way to invest in Bitcoin is by buying and holding for long-term which is 4-10 years or even more so why then would someone thar calls themselves a true investor go against that ideology, it's only traders that take profits when the market is positive real investor are patient and disciplined they stick to the plan and maintain the standard, that's why you should already have a stable income and an emergency fund so you won't tamper with your portfolio.
What you have said is actually true and I just want to add to what you have already said, as a long term investor, anything that makes you sell during your accumulation stage, that means you are no longer an investor, but either a trader that sells for minimal gains or someone that intend investing but due to poor planning, he was compelled to sell at a loss or prematurely.
And another thing we should all be aware of is that holding for just a circle is not long term in my own opinion, though we all have our own view of long term, but at least let it be up to three circles and above, that's what you call long term not just a circle.
And lastly, let's this clear, anyone that sell hoping to buy back when their is a dip a trader, you don't sell your holdings hoping to buy back when their is a dip, you add more to your stash regardless of the market condition as long as you are still at your accumulation stage, not selling what you have already gotten.