In my opinion, taking some of the profits from altcoin investments is a good move when the price rises. it is an opportunity that cannot be missed because we don't know whether the price will continue to rise or even when it will reach its peak. Therefore, while the price is rising and it is profitable, take the opportunity to make a profit.
That's what the majority is doing.
Those that can't dispose their altcoins and turn them into profit are holding it for their own purposes. Maybe the profit isn't enough for them to cover.
Or, they've got some other better plan that's being on its way as they hold it. But if you ask me, as long as you're happy and you're in profit, please do.
You might not see those opportunities to come again as the market is very different with altcoins than of Bitcoin.
Indeed, with fluctuating market conditions, every decision has its own reasons. The important thing is to understand our respective goals and plans. As long as we remain wise in investing, all choices can be the right steps. Hopefully, we can all find the best opportunities amidst these market changes.