Gaiman, Lovecraft, Tolkien, Scott Adams, Justin Roiland, all are products of their era, and fallible human beings at that... and the worst aspects of their personalities seep into their work, either concisuly (Lovecraft, Adams, Roiland) or unconciously (Tolkien). One has to try to separate the artist from the work.
Maybe in the cases of Gaiman and Adams, not enough time has passed... I can understand that.
But in the case of Gaiman, all people are innocent until proven guilty*, for what that is worth...
* I am not saying that Gaiman is Inocent, and even if he is guilty, proving it is an uphill taks. What I am saying is that we do not have a definitive sentence yet, so we have to afford some latitude/leniency until we have one.