People are being dismissive of your post, but I don't think you're wrong. While I don't think it will effect sales, I'm pretty sure Nintendo doesn't want their biggest Smash Bros game (and biggest title for all of 2018) being branded as "the racist Smash Bros game". Especially not if Nintendo is getting at all involved with trying to keep Ultimate in the tournament scene. I think this hasn't gotten too much attention because the game is still relatively new and this is really being picked up during the holidays, when social media accounts are on scheduled posts and game journalists are just doing they're end of the year list.
Also, I think people just aren't that aware of these spirit fights, since the Mr Sandman and Tac ones aren't in the direct path to complete World of Light, and the Dee Jay one is on the spirit board. Not everyone has gotten all of the spirits yet, especially if a lot of people are just receiving Smash for Christmas. Unlike the Mr Game And Watch issue, which required only seeing his side smash attack in prerelease footage, these spirit fights took a little more time to find. Heck, it took Resetera about three weeks after release for this thread to even appear (although it had been brought up in the main Smash OT as well as the Paz spirit thread).
