The Resistance fits on the Falcon at the end of the film. Not dire at all.
Actually, now that I think about it some more, this is another reason why the drama of TLJ rings so hollow. It felt like the entire Resistance in TFA was no more than about a hundred and fifty people with a dozen X-wings and a transport to their name. So in the next movie they suddenly have a massive cruiser and a bombing fleet which would have been very helpful in attacking the Starkiller Base, and which expand their numbers only so they can be whittled down again.
In Empire we only followed a small band of Rebels, and that operation seemed more massive than the entire Resistance. The movie used our lack of information about the Rebellion to its advantage, by just showing us a group which was in desperate straits. But in TFA and especially TLJ, we are told explicitly that this is all that’s left, which implies that the pitiful group in TFA was all there was at the beginning, bolstered by a cruiser that Rian thought the story needed.
That’s why it doesn’t seem dire. The extra Resistance fighters come from nowhere and are lost just as pointlessly, and in terms of a galactic Rebellion, what difference is a cruiser full of troops or a light freighter full of them against the First Order? At least the Falcon can escape more easily.