You're the second person to make it about race. This isn't about race, this is about gender.
Yes we all agree that the movie would have been terrible regardless if there were more male characters fighting for the resistance.
Imagine a sports movie where the cheerleaders for the Dallas Cowboys, coached by Bettie White, beat the actual Dallas Cowboys in a football game. Imagine the film played it completely straight without even the slightest hint of irony. It would take you completely out of the movie.
Yes Star Wars is a fantasy film and it's escapism, but fantasy is also informed by reality. The rebels in the OG films were mostly men. Not because there was an agenda against women, but because we associate armies with male bodies. That is reality.
When you see a battalion made up of 80% women, and the people in command are all women, and the only significant male resistance fighter is portrayed as a thoughtless hothead who needed to be taught the true value of leadership by a bunch of women... it is blatant pandering at the expense of reality and plausibility. Disney wants to send the message that girls can be leaders and soliders too, which is great, but lets be honest you are never going to see the day where that is the standard.
And it definitely isn't the standard now, which is why those scenes rang incredibly false for a lot of people.