I really don't understand the claim that the "bull season only lasts 2-3 months."

Please explain this topic from your perspective.

📌 The pandemic crash occurred in March 2020, but the market rose continuously for exactly 2 years.

📌 The BTC bull that started in 2016 peaked with the ICO madness in 2018.

I don't understand how it lasts 2-3 months! 😅