That's because most of the people doesn’t follow the proper way of investment, rather they take crypto as gambling for change luck overnight and at the end, they lost their money and creating such memes. Although that memes are right, from the point of view during crash of crypto market. People lost a lot even who held potential coins. But after some years, crypto pump again incredibly. So people who had hold crypto with patient, never get disappointed at the end.
Such a mindset is certainly wrong that assumes investing or trading in crypto will provide instant profits,
crypto is so complicated that it needs knowledge and skill,
those who are patient and stick with crypto know what to do and they are experienced.
Reviewing what he said, if you look at the majority of people in crypto, it's what they are after. Many people here don't want to learn the fundamental road to make it, they preferred to have a shortcuts which is why many of them love meme, I mean why would we buy meme tokens if not that we are having intention to take money from each other, because the use case is not there, people are buying lower to sell on the late comers who buy into the late hype of the coins and it's a very bad habit.
The basic rule is the best as you said; as a trader, I will never buy and hold meme tokens but when I see the opportunity to trade them, I cashout from the liquidity they create because it's what people love and they will are always willing to get them into their portfolio and that is why it's sweet to trade them.