Actually, token and coins are good as long as there developers are into it for development, but I've learn a lot that it's hard to diversify your investment only on token as when a coin like ETH will dump, it will easily affect the tokens, you can check on what happen to ETH tokens now.
Some investors are specifically going for coins (and not tokens) for the reason of POS and master-node no kind of easy mining rewarding. Other than this I'm not seeing any differences in investing in coins and tokens as long as their developers are active and the total project is based on by good concepts.
If you are looking for diversifying your portfolio you may go for different kind of coins along with some tokens but how you will be choosing those coins and tokens will be the biggest question here because you should not go for choosing them in rush. You must take time to analyse the future and potential of those coins and tokens. Moreover, when a investor is highly conscious about securing their capital and ready to wait for long period then for them I'm always suggesting to go with only bitcoin regardless of what is the verification principle is emphasizing.