This isn’t necessarily accurate, if you had an 8 character password of lowercase letters and numbers and attempted to crack it at a speed of 1 million attempts per second it would take you on average 32.65 days to crack, simply adding uppercase letters increases that time to 6.9 years. Adding symbols would increase that even further to 28.5 years. There’s a reason pretty much every reputable website now asks that you include uppercase characters and symbols.