User blog comment:MisterWoodhouse/Social Activity, the 2010 Editor, and Unpausing Migrations/@comment-26843482-20201012202739/@comment-39885705-20201012232351

Also no reason to force the migration on ALL wikis while still in alpha testing. It could be months, or years, before the new editor is at all useable. Or maybe they'll stop fixing bugs next month and leave it this way forever - who knows! Their response to bug reports and constructive feedback does not inspire trust or confidence.