2 official Altcoin Seasons: 2017–2018 and 2021.

After 2021 until 2025 is the period when Layer 2s are launched in large numbers and listed Spot on CEX exchanges.

Layer 2s have almost never experienced a true Altcoin Season.

So Layer 2 is the "historical deception," as many analysts entered the bear market of Crypto without an Altcoin Season.