Looking at this from another angle, I certainly agree with you.
People that sold their bitcoin has been criticized enough even though we can see the green light they missed. It doesn't just necessarily mean they didn't think it through or didn't have anything to do at that point. It all boiled than to accessing their options and probably making one of the key decisions of their life. Its just like few years from now a different generation mocking us for sticky with bitcoin while there is something different which they know.
When you are investing, one of the purposes is to sell. If you don't have the intention of selling, then what is the purpose of investing? Even as people are interested when you are holding for a long time, and you have made enough profit, the next step will be for you to sell. And why are they mocking people who are selling because they don't make any plans? They invest very early and sell very early because some people are always fond of investing and then selling without making any profit.
People on the internet criticize those who sold Bitcoin in 2017 and 2020. But in the future, I'm sure people living in 2030 or 2035 will criticize those who sold Bitcoin in 2025. This is a never-ending cycle, as it will be every year. I'm sure those who acquired Bitcoin in the early days have all sold their Bitcoin. And we can criticize them only because we're already living in 2025 and seeing Bitcoin prices that can buy a house instead of butter. Some Satoshi-era wallets that never move are likely dead wallets abandoned by their users. Or they're too rich and have plenty of other income to hold Bitcoin for 10 or 20 years.