Why do White people say "haha ebonics" like it's a bad thing?

Groups form their own dialects, handshakes, and customs WORLDWIDE to keep certain things within the family so to speak. Italians! Irish.. In fact, the only ones who don't are country, midwestern rednecks. Like White guys in Brooklyn don't say "yo" and "knowwhatimsayin/knowwhatimean" after everything. Those Irish dudes in Boston and Roxbury use slang. Once again, Blacks mocked for something EVERYONE does. Now I'm convinced the White folks ( and probably some Blacks too ) on Y!A are lame. Boring, unoriginal, bland .. I bet you n**gas frolic in the cow fields. F*ck outta here.