Is this a bug in steemit?

Hi All,
I was just going through the top users in steemit and i found a user with name "null".
Surprisingly this user joining date is showing as 1970. If steemit launched on 2016, Home come user joined in the year 1970?
User URL: https://steemit.com/@null

H2
H3
H4
3 columns
2 columns
1 column
Join the conversation now