Er, it's about 1 per cent, yes overtaken by Polish, about par with Urdu and Punjabi, and more than twice as many users as British Sign Language. Small but not off the scale.
And how many Polish schools do you think would be tolerated never mind state sponsored?
Thing is, if a Punjabi Scot stops speaking Punjabi (I can tell you from experience it's very hard to keep up the language when it's just the family speaking it daily), Punjabi won't disappear, but Gaelic will. (I realize a potential answer is 'good riddance', but not all agree.)
So if there were no Gaelic speakers in Edinburgh it would die? Really? Because as I've mentioned its hardly the last great stronghold of the language. I'll admit I'm not really fussy for its preservation though I have no burning desire to see it die, I do however question the need for its preservation over the needs of the majority in the Lowlands.
It's really, really not. (FWIW, the roots of today's Gaelic policy go back to the 1980s under the Tories.)
So its nothing at all to do with ECRML?
For many people, it's just as relevant as English to you or Russian to me.
If the government are trying to Gaelicize the Lowlands, they're doing a very poor job of it anyway.
But the railway station signs aren't in Russian! Poor job perhaps but what other reason could there be for publishing official documents in a language spoken mono-lingually by not one single person and spoken by a few hundred in Edinburgh, Glasgow or any where in between.