I see a lot of plus size women that make remarks about skinny women. Now I do love the fact that you have the confidence and self esteem to embrace the body you have but in no way will putting others down help you in any positive way.
The same way you feel about people making comments about big women is how some skinny women feel. You do not know them or their situation. There are many women who are not happy being small and try very hard to gain weight and it just doesn't happen. We cant assume all skinny women have eating disorders or other problems. Just like we cant assume that all fat people are lazy and have every dangerous health condition.
Loving yourself also means not putting others down. Putting others down only shows your insecurities that you have with yourself. I understand you want to stand proud of who you are and the body you have but being negative towards others will only have people look at you in a negative way.
Embrace the body you have without putting others down. Once you are able to do that you will be able to truly love yourself. Always stay positive ladies and remember to treat people how you want to be treated. Don't make negative comments about anyone if you don't want people to make negative comments about you.
Peace and Love