You are right, it is a rather small resolution, but it is offered in the settings window, so I would expect it to be playable. However, when played at 1920x1080p, the fonts are better (legible at least) but still far from good.
As you can see with the below screenshots, there is still 'wobble' in the lower three lines at 2560x1440. If not at the highest resolution available in consumer macs, where are the fonts supposed to be good?
Screen crop at original size (1920x1080):
Screen Crop at 2560x1440: