Yes and no. Bots by their nature fall into patternswhich is what makes them easy to identify. But auto generated uns actually make it much easier and faster to create new accounts. You can all but script account creation and captcha becomes less effective every time we use them for sites that use the data to make their ai better.
Yes the auto names can make it easier to spot off a boy, but it's not a dead give away.
6 of 1 half a dozen of the other
So cute and great pattern! Did she draft it herself? If yes, does she sell designs, if no would she share where she got it?