While browsing this community I notice that some people say that the main advantage of usernames accompanied by passwords is as they take more tries to be brute forced, however I don't think that is the case, for example:
#Easy password just for example Username: admin Password: c1235
Is just as tough to crack as just a single token/password to log in:
Another argument people give is that usernames accompanied by passwords can be salted however you can also salt a single password by splitting into two different substrings and salting them.
Also SQLinjection is way harder to find the details of the account you want to hack if there is no username...
Apart from safety measures of course I understand that usernames also serve as the user's memory for the password, but looking at the security facts I don't see a lot of difference between a username with a password and a long password phrase/sentence.
So I would like to ask, are there anymore reason why passwords accompanied by a usernames are deemed safer? If I made mistakes in my posts please say so, i'm not an expert!