It’s especially about how feminism is bad.

For some men's issues, feminism is the primary obstacle.

For example, one issue that gets brought up time and time again is family court bias, especially regarding custody. It used to be once upon a time that custody went to whoever could best materially provide for a child (typically the father). Early what I guess you call proto-feminists successfully replaced that with the tender years doctrine (essentially that a child needs it's mother), which later got dropped in favor of essentially whatever that judge happens to think is best decades later when women getting custody by default was deemed part of patriarchy. The problem is that by that point it had enough cultural inertia that a bias remains in favor of it.

The typical MRA suggestion to fight this is formal law or policy stating that family court must start from a position that shared custody is best for the child unless there is a good reason for it to be otherwise - a rebuttable presumption of shared custody. This generally meets opposition from feminists who essentially start arguing about cases that are nearly always also things spelled out as examples of "good reasons otherwise" (such as abuse). In one case, feminist protesters basically described men who wanted more equal custody as the abusers lobby because in their eyes the only reason men would want to see their children more is to use those children as a means to abuse their ex.

A rebuttable presumption of shared custody has actually passed into law in two states, the first was Kentucky.