Is it hypocrisy? English is not my native language but I consider it the default CS language. There must be a way for us to share knowledge, and that turned out to be English.

Yes, but it is a problem. Unlike Computer languages, human languages do not only convey pure meanings, i.e. pure descriptions of relations between entities. They embed a full baggage of culture, so even if it is convenient and pragmatic to use English in CS as main language, it is not neutral, it is both an effect and a cause of the Anglo-saxon cultural, economic and military hegenomy over the world.