Many experts things that the market is overvalued, especially overvalled the main assets such as Bitcoin and Ethereum that is why many investors prefer to buy the asserts with low capitalization that are not overvalued so much and have a good potential for growth.
They think that market overvalued because cryptocurrency market falls, when market will raise they will wright about how prospective is cryptocurrency market.
When market falls it is a good time to buy tokens for their future growth. But nobody knows how long the fall will lasts to buy the tokens for the best price.