That is just a natural consequence of the length of time spent in the struggle and in the study of the problems faced and the most effective strategies and tactics for addressing those problems.
As men’s movements come to understand their goals and the true causes of their problems, they, too, will develop effective strategies and tactics to achieve those goals.
I only hope that as the variations rights movements mature, they come to realize that the problem is not who limits our opportunities for success on our own terms, but that anyone does. The intersectionalists get closer than “closed” groups, but many still make the mistake of trying to gain access to the halls of power rather than destroying the very halls themselves. The powerful don’t actually care who finds their way into positions of power as long as the power structures themselves remain intact.