It could be better or worse. Communities tend to follow their core members. If those 70k users were the most connected and central nodes in any of Twitter's tho

It could be better or worse. Communities tend to follow their core members. If those 70k users were the most connected and central nodes in any of Twitter's thousands of subcommunities, it would precipitate a significant shift. But if those 70k users are leaf nodes, then it will amount to no change as far as Twitter is concerned.