At this very moment currently 252013 registered account.
Now lets see what is the probability of guessing even a single registered password of steemit.
You get 52 letters password with each letter can have a upper case(26) letter, lower case(26) letter and digits(10) which creates a possibility of 62 letters in one places and we have 52 such places available. Hence total possible combination is 62^(52).
Total registered passwords 252013.
Probability of correct guess = 252013/62^(52) i.e. less than 0.000000000000000..lot more....o1. Its not possible for any human to find even single correct password theoretically.
Do you remember even you password? Haa
Cheers.