I think it’s worth differentiating between men’s rights and men’s liberation.
Men’s rights organizations are often interested in advocating against legitimate issue in the courts system, lack of assistance for male victims of abuse and more. However, some bad actors have used it as a smokescreen to roll back the gains feminism has made for women. Some going so far as to demand violence.
Men’s liberation on the other hand is more about becoming healthier people with good relationships. It’s about divorcing our expectations for ourselves from societies expectations for men and by extension changing what it means to be a man in society.
Both movements I think have value but I don’t think it’s surprising that many feminists side eye men’s rights orgs.