Although Bitcoin and others some altcoin already higher than previous ATH, that not mean the altcoin season will end. We have to analysis it according to the total of market cap that growing, the increased of institutional investor join in to crypto and the mass adoption keep stronger. From my personal analysis, the altcoin season will extended until in the beginning of next year.
the correction has occurred, even some altcoins have experienced severe corrections. recovery will not occur in a short time even though the market situation is different from the situation a few years ago. if the market adoption of altcoins has a good enough increase, it could be the trigger for the altcoin season to experience a new trend.