>>45512765It was a lack of hindsight more than anything.
There was an interview of some of the folks who worked on Gen 1 localization, and the one overseeing the project was extremely adamant on naming it his suggestion, Mr. Mime, just to get it out of the way, despite the others being concerned should Pokemon introduce genders in the future. The boss thought Pokemon wouldn't warrant a sequel, so he didn't bat an eye at the possibility.
If people still have that webpage with that interview and more, please post it. I don't have it on me.