I don’t view language as a cultural heritage thing, just a communication protocol.

Spoken like an English speaker. Language is absolutely political, a product of its specific environment, and there is a lot that can be communicated in one language that would be difficult in another. Erasing languages isn’t like no longer manufacturing a specific style of plug, instead it silences viewpoints and enforces the cultural hegemony of the dominant group.

There’s a reason fascists are fond of erasing the languages of the marginalized.