If you miss the 10 best days in the market, then you’d miss out on a huge gain… Is this true ?

I keep hearing this argument. But when anyone mention this, they always fail to point out that if someone is out of the market and miss those 10 big gain days, they'd also miss out many big loss days too.

I understand that the market has more green days than red days, but to just point out the missed green days and not the red days is complete horse shit.

Please stop perpetuating this myth, thank you.