Straying off topic a bit: If we native English speakers want our birth tongue to continue being the global language, we should make English as easy as possible

Straying off topic a bit: If we native English speakers want our birth tongue to continue being the global language, we should make English as easy as possible for non-native speakers to learn and use — mainly by not looking down on intuitive-but-"bad" usages such as "it's" as the gender-neutral singular possessive pronoun.