But let's say that after some time you decide that you don't want to use your real name here for privacy reasons. This is why some people here asked to change their nickname.
LOL, are you sure that these former nicknames was a real names in their documents:
Poker Player, The Pharmacist, Coolcryptovator, Igehhh, BTC_Bear, Peeps Place, mjglqw etc
.?This is why some people here asked to change their nickname.
No, the real reason of nickname changing is a avoiding of scam accusation or avoiding of accusations of suspicious activity
for privacy reasons
What privacy reasons? LOL

If a person left a bunch of evidence about himself all over the Internet, including Facebook and other social networks, and then just changed his nickname on bitcointalk.org, then this will not protect him in any way
If nutildah will change his nickname on bitcointalk. How will that protect him? Everyone saw his real name on Facebook