> In my country, language protection is a big thing. It's also why we have such a terrible ability to speak english
The latter does not inevitably follow from the former. "Language protection" has been a big thing in Finland inasmuch as the Finnish intelligentsia has historically preferred coining new words from Finnish roots instead of adopting foreign vocabulary (so tietokone for ‘computer’) and there is heavy state subsidy for local cultural productions in Finnish, but Finns nevertheless have great proficiency in English.
> Every time a language dies, like latin or summerian did, we gain uniformity.
What? Latin died as a native language by splitting up into a large series of dialects across Europe that were no longer mutually intelligible by the late first millennium. Europe did not gain any uniformity by that process.
If you are referring to the idea that children need to spend their precious school hours only on "useful subjects", then you ought to consider that many young people these days mainly learn English through osmosis while watching television programs etc. at home. So, whether time during their school day is spent focusing on aspects of their native language or not doesn’t make a difference for their ability to communicate internationally.
As for "Efficient communication is probably the most important factor in peace", that kind of idealism doesn't hold in practice. The peoples of Yugoslavia could efficiently communicate with each other because they shared essentially the same language, but it still didn't stop them from descending into brutal warfare. Even today, peoples of two antagonistic countries can often communicate with one another in English, but they go on despising each other nevertheless.
The latter does not inevitably follow from the former. "Language protection" has been a big thing in Finland inasmuch as the Finnish intelligentsia has historically preferred coining new words from Finnish roots instead of adopting foreign vocabulary (so tietokone for ‘computer’) and there is heavy state subsidy for local cultural productions in Finnish, but Finns nevertheless have great proficiency in English.
> Every time a language dies, like latin or summerian did, we gain uniformity.
What? Latin died as a native language by splitting up into a large series of dialects across Europe that were no longer mutually intelligible by the late first millennium. Europe did not gain any uniformity by that process.