People are learning to be sensitive about other people's preferred pronouns; why can't they be sensitive about how people spell their names?
I don't know if it's about sensitivity as much as memory. It can be hard to remember which variant spelling of a name somebody uses. I always have to double-check with the various forms of Schwartz or Schultz or the like. I get really tired of having to look up everyone named Stephen/Steven because I can never remember which spelling they use, except in a few cases (like Steven Spielberg).