There is still a long time to go to the end of this year, so there will always be a possibility, as you said, that there is always optimism that bitcoin will be able to reach $ 150K.
Everyone will always think that if you want to make a profit, you can forget the initial target that has been made and move to find a higher value, but remember the time is only until the end of this year and after that it will usually enter a massive correction season.
Taking profits isn't about giving up on the goal, it's about sticking to the investment plan created beforehand and is a part of safely reaching the target. I still believe BTC will hit 150K USD this year, but belief is still just belief. I'm trying my best to manage risk, and RDCA is the simplest way I can apply, similar to DCA when accumulating.
When BTC reaches 150K USD, I'll still have a little BTC to take profits on, and I can proudly say that I held BTC to a very high target. In the worse case, and let's say BTC only reaches 149K USD, I'll also exit the market by the end of this year to avoid the harsh crypto winter!