Honestly, having a common language that offers access to most knowledge and people in the western world at once is already amazing. If it happens to be the native language of most Americans, all the better for them.

A century ago it was French or Latin, and a century from now it might be Mandarin or something else. The existence of a standard is what matters.

The only complain I have about Americans and language is that most tech companies fail spectacularly at supporting multilingualism, from keyboards struggling with completion to youtube and reddit forcing translations on users.