Anything over one dot communicates the idea effectively.. the difference between two or three dots is irrelevant...
Ellipses look like squares.........
Close up they are circles....
That’s not true. With two dots, it can as plausibly be a typo of a single dot. In fact, in your GP post I was assuming that you hit the dot key a second time instead of the space key by mistake, and ignored the resulting lack of auto-capitalization. (Granted, the fact that ellipses are usually separated by a space from what follows also played a role.)