Today's conclusion: most people on Twitter who think they know how the LGPL works actually don't (and won't read it and fix their misconceptions before randomly attempting to "correct" me).
Sometimes they notice themselves and fix it. IIRC I once caught @jugendingenieur with LGPL'ed code statically linked into the OP-1 firmware once (but didn't say anything), then it mysteriously got replaced with a permissive alternative in a later version.