I support the right of people to speak whatever and however they want. If people want to speak English, just let them. Languages are tools, they are not pieces of art to be kept around for your own amusement, they are not religious texts dictated from a higher power. They are something that arises from the people for the sake of the people themselves.
French, Italian, Spanish came about when Latin got corrupted and hybridized with other languages, changing its sounds and evolving together with the people that spoke them.
English itself is basically 30% French - and yet it's still English, isn't it? Loanwords are just what they are - loanwords. In the end, the end goal is to be understood, and to understand those that speak to you, and if a loanword expresses a concept in a way that's more broadly understood and universally recognized (i.e., "computer"), why should people reject it?
The whole concept of "language purity" is just a silly show of chauvinism, a "fear" of contamination from foreign influence that ignores the fact that all languages are artificial constructs. Most national languages have been born out of coercion and nationalism, and only in recent times they have been "standardized". Most languages are basically just the dialect of the capital, that for some queer reason was picked to be the most noble of them all.
Knowing English is crucial and its teaching should be of paramount importance because it has become the lingua franca of the modern world. It's the koiné that allows people from various backgrounds and various places to communicate. It allows people to cut intermediaries and learn from each other, directly, what other parts of the world have to say, removing from governments and national media the ability to spin things around.
I know lots of people that only know Italian, and thus only know what the Italian media wants to talk about, or cares about. Local languages quickly become a way to gatekeep people, and cut them out of the source of global discussion about topics and ideas.
I personally think that languages should be taught and preserved, because every single language you know gives you a different outlook on life, things, and concepts. Every tongue has its set of things it cares about, its own history, its own value, and everyone should be bilingual to truly understand that there's a wider world outside of their small garden. We cannot, however, allow this to hamper the progress we've made in understanding each other. We should always keep our mother tongue close to us, without forgetting what languages are for.