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.
Actually, people who invest high amounts in meme coins tend to make such memes when they have lost their investments because not all meme coins gain significant value over time and they only do it in their initial phase when they are heavily hyped by the community. Those who choose proper cryptocurrencies such as Bitcoin and have enough patience to wait until the market enters the bull run, won't face any losses at all.
It basically depends on how much knowledge and information one has about the cryptocurrency market and how it basically works, those who enter the market without any knowledge and make investments without much thought and understanding tend to lose money in the long run.