I've been watching the old Starwars movies and was struck by Ben Kenobi explaining why he had told Luke that his father had died, (not that he was Darth Vadar) "It was true from a certain poin of view. Luke, you must remember that many of our "truths" are based on our own point of view." While I understand the sentiment, it leaves no room for what is (definitively) morally right and wrong - just a lot of moral equivalency.
Yes and no.
It merely means that for those who loved Anakin, it was better to think of him as dead while the actual truth is something different.
It doesn't really render the Emperor less evil.