dont need to change for nobody 否定句中为什么不用anybody?

个人认为这句话有问题,他的本意是想说dont need to change for anybody
别为任何人改变,要么说 change for nobody,
要么说dont change for anybody 否定句中用any 肯定用some
但是外国人说是都可以的,下面是我大学外教老师的回答,请参考：
[10:56:26] William D Hunter: it means you can be yourself and not be somebody you are not in other words, you are who you are if some can not accept it that is their problem
[10:57:40] William D Hunter: you can use anybody also
[11:00:09] William D Hunter: yes but is more idiomatic or some would say slag or non standard, but with nobody you use body language to get the full meaning for example move your head from side to side and rool your neck, at the same time along wing with raising your voice a little bit like you are angry, but not real angry more like irritated
他的意思是两者皆可.anybody更正式标准一些,当用 nobody,一般是俚语或非标准口语,并且可能配合肢体语言用于强调,比如摇头、提高声调等,虽然不至于很生气,但是很激动的情形下使用.
以上仅供参考,欢迎批评指正.