The name "acceleration" is just as misleading as "expanding" here, but maybe useful. Our galaxy is non-gravitationally-bound to a lot of other galaxies, and we

The name "acceleration" is just as misleading as "expanding" here, but maybe useful. Our galaxy is non-gravitationally-bound to a lot of other galaxies, and we "accelerate" away from them. Yet we don't really feel that. We also obviously can't accelerate away from all of them, when they are in random directions. That's because the "acceleration" describes the change of distance, without changing position. Without changing position, there's no change of momentum. That "acceleration" is a consequence of the expansion/stretching described in the article.