I really don't understand you asking end of alt season when we barely touch the surface it.

ETH breaking $2k,
ADA reaching $1.00
BNB $300.00
DOT new all time high
Doge being pump so hard and many are making profits

So why don't you sit and relax go with the flow and invest on the right altcoin right now. No need to be negative and look for the end of this massive bull run because this won't stop and will continue at the end of the year.