Yes, I think we are experiencing the altcoins season because, firstly, Ethereum has shown that it is the platform that is hosting several projects and has performed greatly well in the last 21days, hitting $424 day (14 August 2020). Other altcoins has also followed Ethereum in their little ways to prove their potential in the current market trends. Coins like,
Chainlink,
Tron,
vechain,
cardano etc
These coins has performed notablely well in the past 21days.