You need to learn English if you’re serious about game development instead of getting upset over what I reckon is a legitimate remark. This is the primary international language and I’d estimate 95% of material, courses and any other information online regarding UE is in this particular language.
P.S. I am not a native English speaker myself. Beside my native one, I speak three other languages and I don’t complain that I’m not allowed to speak my native language in international communities.