Unlike that exodus, the Lemmigration isn’t for censorship and freedom of speech issues (inevitably drawing in the most toxic, bigoted and hateful section of Reddit to voat); it’s because of reduced accessibility and usability, alongside the visible contempt that Reddit’s administration has for their users (free content providers) and moderators (free content curators).
This means the people fleeing Reddit’s shores aren’t doing so because they want to recreate fatpeoplehate elsewhere; it’s because Reddit won’t let blind people moderate their own communities.