Do you think that having your icon be a picture of a smiling cardboard Hitler is a good marketing move?
You know who else had a similar mustache? https://upload.wikimedia.org/wikipedia/en/thumb/e/eb/OrwellB...
But that was in the mid-1920s. Obviously it was fashionable at one point, in some circles, and once it was associated with Hitler, people stopped wearing it.
There is a distinction between saying "something associated with something bad is aesthetically displeasing or embarrassing" and saying "something associated with something bad is a terrible crime". The former is not a moral panic.