Different sources have different numbers. One says 800 million, one says 400 million, the point is that lemmy poaching a couple hundred thousand users is nothing to reddit. If lemmy has 200k users that left reddit, even if we assume the smaller value of 400 million reddit users then that’s only 0.05% of reddit users that left.

For a website with over 800 million monthly users, 100k is nothing, barely even a rounding error. You can say it was a success for lemmy, but as far as the actual goal of the protest it achieved basically nothing.