We've had a number of large influxes. It's nothing to be concerns about. It makes the place full of #askhubski and #newtohubski posts for a week or so and then those that aren't a good fit tend to dissipate and then we are left with those that like it here. It works well actually.
Voat wanted everyone. No matter of their disposition. During the last big migration we made this post:
Not exactly the thing you do to attract everyone and anyone. Big difference between Hubski and Voat. There's no doubt that they have a larger community than we do but we are not about how many people, we are about the quality of those people.