Yes, but that was in preparation and during the early stages of the Reddit boycott (and due to kbin being a completely new project). In the same two days Lemmy jumped from 156,456 to 350,459 users, kbin went from 40,130 to 42,729. Still notable, but among the lowest two-day increases kbin has seen for a week.

Also note that Lemmy’s increase of active users was minimal in the same period, so the new ones are basically all inactive.

https://kbin.fediverse.observer/dailystats
https://lemmy.fediverse.observer/dailystats