Top altcoins always bring safety for investors, and you will face very little risk when held in the long term.
No, it will never bring safety but maybe it's less risky.
But think of this, no altcoins will always look good as there is a competition in the market, and if they have a good volume now, that doesn't mean they will continue to enjoy that if they will be outperform in the long run or the team got lazy in developing the project.
However, the crypto market usually depends on the rise of Bitcoin, so in all circumstances, you need to consider carefully because the risk can occur at any time. Personally, this time I only hold fiat and look for some new coins to appear in this market because they are very good coins for you to make a profit.
it's always import to consider the overall market situation, and you can look on bitcoin to determine that since bitcoin is dominating the market now.