But why the nick too?
Habit I've developed. Back in my early on-line presence I used the same nick all the time. Then Google came along and a pattern could be developed by searching for your nick. Do this long enough and a profile can be developed of you.
So to disconnect that, to make it harder for these DOXXers, that no longer connects with different places.
I had a funny experience. One of the abnormal people (a hater and a sort of psychopath) decided to search online what I said before and to 'expose' me. Too lame to be a DOXXer and what he found was
another person with an identical nickname. The funny was that the one with the identical nickname was some real football fan, but I'm one of the least interested in football, tennis, hockey, rugby, baseball, volleyball and other sport games like these.
So, if you change your nicknames, it's still not a 100%-guarantee that some of the psychos are not able to 'doxx' you. And their 'doxx' is pretty successful, because many (or most) of the users/netizens believe AT ONCE, WITHOUT EVIDENCES/PROOFS. Nothing! There read = they believe. Nonsense... but a fact.