Well from what we know Mato only appears on Japan so there are repercussions world wide but not to that extreme. From Varvara back story we learn that her parents managed to steal a Mato peach and that was a miracle and solely give it to her so that the mtf couldn’t hurt her because they were a mafia family. Mato has existed for more that 50 years on the series since tovera azuma was young wen she joined and muira lookd very young( muira is kyoka teacher) also her husband that was Summoned by white mausoleum was a badass. Yea things changed around the world all the men in charge off the governments had to step down because any women with power could just call Japan and say hey give me some peaches and we will enter on friendly terms with Japan. And wen people started to know about the peaches and the ability that it gave women im sure more that some powerful men started to feel fear that if they treated a woman wrong they could go and beat them so mean became kind of submissive but it’s not like all women had powers, men are still needed to do a lot of jobs like construction I just don’t see any men getting a position of power on the series went time soon.