Diversify portfolio is important, but not all of them are like that, so what's the situation, if needed please diversify it, but if it's not necessary, just go ahead because making them in different coins is conditional, IMHO
Like today when the market is uncertain, I only separate my assets into two or three types, but when the market moves quickly I can split my assets into dozens of types to pursue the maximum profit.
Trading is how we spread the net according to the waves, in my opinion.