I'll say this about Emma Stone's comment (and Natalie Portman's for that matter), and leave it be.
Whether they intended it this way or not, their comments do come across as a bit guilt-trippy towards the male nominees, and I would say that that is unfair to them. Yes, there is an issue of gender and race inequality in Hollywood. Yes, it is an issue worth addressing. However, I don't think calling it out at the expense of other people is necessarily the best course of action. They didn't ask to be nominated, and they were being recognized for their strong work (in Del Toro's case, the culmination of a career). Del Toro, Anderson, Nolan, and Peele all deserved to be there just as much as Gerwig, so for the Best Director group to be qualified all season long as "four men and Greta Gerwig" is a bit dismissive to say the least. Are they supposed to feel bad because they are male directors that got nominated? I get that the comments were meant to call out the industry in general, but to use that specific category as your platform, well, you can't help but implicate those men as well. I think Del Toro's reaction to Portman's remark at the Globes summed it up perfectly. It was an almost "What did I do?" kind of look.
I doubt it was Stone's or Portman's intentions to insult the male nominees, but speaking for myself, if I were in their shoes it probably would've rubbed me the wrong way.