Even the Chinese realize this as a danger to their own language, as recently published in China Daily:
"Chinese, as one of the world's oldest languages, is now facing unprecedented challenges. We cannot speak good English to the detriment of our mother tongue. For everyone of us, mastering a foreign language should be based on having a good command of our mother tongue. We Chinese have enough problems with our own language ...And beside the standard spoken putonghua, there are another seven main dialects, which are each further divided into several accents."