Latin does give a significant advantage to Romance-language speakers, and anyway trying to make everyone equally bad at the common language is a bit procrustean

Latin does give a significant advantage to Romance-language speakers, and anyway trying to make everyone equally bad at the common language is a bit procrustean. The big disadvantage to the decline of Latin (which is probably mostly something that took place in the eighteenth century) is that it fragmented western Europe's academic writing. So without Latin you can't read Thomas Aquinas or Thomas Hobbes' De cive or John Napier https://www.youtube.com/watch?v=OjIwCOevUew https://www.youtube.com/watch?v=OjIwCOevUew in the original; or often at all, as a great deal has never been translated while some translations aren't of the best quality. And even with Latin and English you can't read the enormous amount of important material which has been published in (particularly) French and German, especially up to about WWII.