I will not blame when someone sells the Bitcoins they have, because everyone has their own reasons when they sell the Bitcoins they have, maybe it's for personal needs, buying things they dream of, or for whatever reason. Moreover, it is Bitcoin that they have, so it is their own right to what they want to do with the Bitcoin, whether they want to hold it or sell it. But indeed it is quite unfortunate when someone sells the Bitcoins they have for trivial reasons, because if they can they should use other money that they are ready to use, but if they still want to sell the Bitcoins they have, let it be so, it's not our business, and we can't judge them either.
You are right, everyone has the right to sell their Bitcoin, either partially or completely. However, if we are talking about a Bitcoin owner or holder selling their Bitcoin for trivial reasons, I think there are two possibilities: the first is because they have a poor mindset regarding money management, while the second is usually because they have little knowledge about Bitcoin, so they may be hesitant to hold it any longer. However, we need to realize that whatever someone does with their Bitcoin holdings is their right, but from this, we can gauge a person's mindset based on what they do.