Why are you so sure about the next trend in 2021? Are you very good at forecasting trends in crypto? if it were as you say it then everyone would choose the same thing as you today before it's too late.
No, you don't have to do what other people do because investing is not horse racing. You have your own way of deciding which asset to invest in after some deliberation. Profit and loss in investing is our own, so what's wrong with other people who believe that the asset they choose are potentially good for themselves (not for other).
I'm sure not everyone who claim to invest in a single crypto asset actually does. You know, I can tell you that I have 100BTC as a future investment asset. So do you believe me? If not, then you are doing the right thing because you didn't decide something without clear reasoning (asking something). You have principles and other people have, you and other people can decide which choice is best for themselves. Consider the risk.
OP, who can predict future trends? We don't know what will happen to the world after the pandemic hits and also the future of crypto. Is it enough just because he said he was optimistic?