I think it's important to remind people what executive orders can and can't do. An executive order is an instruction sent to the government itself. It instructs government workers how to perform their job. It is not directed at the American public (though it can and does have an effect on the American public by way of government policy).
As such, this current executive order effectively does nothing. We've attempted to pass laws that make English the national language, but have consistently failed to do so.
And personally, I'm for having English be the national language of America (as a bilingual American myself), but this executive order does not make that so.