you know the blue checkmark
so....
- accounts verified before they messed up the checkmark are still having the blue one
- accounts since the ckeckmark is messed up have a yellow one
- Twitter literally wrote to the blue checkmark that since it is the old checkmark for verification it is pretty useless to care about it (this is what I read when I clicked on it on an account to see what the difference is between the yellow and the blue one)
so simply said Twitter gives an F to people who got verified in the past but still dosn't takes this off of these accounts 
Twitter is a very dumb place
