Updating is the humane thing to do, with the caveat I mentioned above about redirecting. I think it’s difficult to really appreciate the sheer scale of a name change until you’ve been through one.
Or, more accurately, part of one; it’s usually beyond the energy one person has as we as technologists have created a world where it’s nearly impossible to be forgotten—we’ve captured and captured and captured and washed our hands of the responsibility of respecting the impact of releasing that captured data.
In fact, this strikes me as a strong argument for a redirect. It’s a positive action to not just reflect an artist’s identity, but gently guide people who may not have an up-to-date understanding forward.