Mealybug? Doesn't look like images I checked...

[PaphMadMan]

Springtails are almost always present but only become noticeable when conditions are right. Even if you could eliminate them from your whole collection it would be temporary. Next time you walk in from outside they could be on your shoe. If they show up like this just a few months after repotting either conditions may be constantly wet, or something in the media broke down fast, or perhaps direct infestation from outdoor plants brought in - some cause, not just because a few survived the last repotting. They probably aren't in the top 10 list of things to be concerned about with your plants even if a heavy infestation crops up for some reason.