The disease of monolingualism

I clicked over to this website, EuroComRom, from a HTLAL thread. The website is about multilingualism in Europe and a strategy for achieving it, but frankly, that’s not what this rather short post is about. What immediately caught my eye (and made me chuckle) was the opening line of the site’s introduction:

Monolingualism is curable.

It made me invision some curious alternate reality in which people who only speak one language are seen as being sick, and are sent to institutes to be “cured” of their ailment.