Re: "immigration officials determined $1m would be necessary"
I think it is reasonable to have actionable criteria for individuals seeking citizenship - it is not a right.
So learning English or a language necessary to be economically self-sufficient is a reasonable expectation to me.
But whatever the criteria they must be measurable and defined, in writing and in law.
They *cannot* be subjective or at the whim or discretion of poorly educated and narrow-minded approval officers.
Those officers would pick another job if they were any better.