Wiki says that:
"An economic bubble or asset bubble (sometimes also referred to as a speculative bubble, a market bubble, a price bubble, a financial bubble, a speculative mania, or a balloon) is trade in an asset at a price or price range that strongly exceeds the asset's intrinsic value." and also "bubbles are often conclusively identified only in retrospect, once a sudden drop in prices has occurred. Such a drop is known as a crash or a bubble burst." (https://en.wikipedia.org/wiki/Economic_bubble)

From this point of view crypto market is financial bubble because if we look back into late 2017 and early 2018 the price of most coins was exaggerated several times from their fair value.
Some coins were sold at x50-70 ICO price - so don't you think this speculative rush was created artificially?

Is it still worth continuing to invest in crypto? Maybe yes in the short-term trying to predict momentary pumps, but I'm not sure about the reliability of long-term investment.