MLK being dead plays to the strength of this analogy, because Lewin is retired. Removing his lectures on OCW, recorded 15 years ago, is like refusing to read or watch MLK because of his moral failings. The issue with the MOOC on MITx, where he participated as late as last year, is different, and I would agree with barring his participation on the platform in case the transgressions are serious enough. But if you look over the discussion, it is the removal of the static, non-dynamic, incredibly popular and famous lectures on OCW that strikes many people as unjustified.
P.S. Feynman was a creep, and anyone who thinks that fact should cause people to stop reading his justly famous textbook and prefer that others "step up" is, not to put too fine a point on it, an idiot.