I prefer to see Mark Mothersbaugh's being known primarily as "The Rugrats Guy" to most Millennials as something akin to karmic justice for his antics. See also his weirdly derogatory comments about disco.
This won't be a surprise for anyone who knows much about him. Mark Mothersbaugh was a punk/new wave guy (though obviously not exclusively) and most punks had a visceral hatred for disco.