No one cares what Germans think about people abusing their language. I personally have zero issues with accents or mispronunciations here and there by non-native speakers. That smells of "fear of the other" to me and taking easy potshots at people I consider my full equal isn't cool. If I feel a little "anger" then that's a fallacy in me not in their pronunciation. As long as I can understand we're good otherwise we'll work it out someway or other.