I'm not racist but I call asian males boys rather than men
Are you sure that statement might not actually be racist?
Yes I know that I'm not racist but it's just my own value judgment.
You shouldn't treat someone different or call them by a different term just because of their heritage. It's not your place to judge others just because you have preconceived notions.
It's not like I'm doing it in real life, just online.
Even when you say things online they can still hurt peoples feelings. The term boy was used to demean black men in history I really see no difference to what you are saying.