Matt Mullenweg's reactions and retaliations over the whole #Tumblr thing (while he's supposed to be on a 3-month sabbatical) have moved the whole ordeal to a point where any original justification of banning someone and throwing a hissy fit over it have stopped being relevant.
This is now a GDPR violation (and the woman being harassed lives in the EU) and is probably going to put the whole company into the limelight on those terms.