We will not act on complaints regarding
... responses to each below...
‘Reverse’ -isms, including ‘reverse racism,’ ‘reverse sexism,’ and ‘cisphobia’
Good. Discrimination of race, sex or gender identity is each respective thing. Privileging the "default" group for each of those to create a "reverse" is inherently racist, sexist or transphobic (respectively). If you feel like you're being treated unfairly because you're white (racism), male (sexism) or born with the genitals that match your gender identity (uh... cisphobia), address those the same way a person of color, a woman, or a trans person would. If it turns out you are actually being treated unfairly, nothing about "we will not act on complaints regarding reverse-isms" precludes a reasonable outcome. It just precludes creating a special class of each just because you as a supposed victim happen to be in the dominant group in one of those dimensions.
Reasonable communication of boundaries, such as “leave me alone,” “go away,” or “I’m not discussing this with you”
Good. Fuck you if you disagree. Seriously. Unless you are actively enforcing a law and have good cause to be doing so, you have no right to expect another person to engage you at all. Even if you are enforcing a law, most of the law is in favor of people being able to refuse to speak. That this is even being questioned is fucking appalling. If someone says any of those things, walk away and calm the fuck down.
Refusal to explain or debate social justice concepts
Addressed above. No one is actually required to explain anything to you, at all, ever. This is minutiae.
Communicating in a ‘tone’ you don’t find congenial
The above is instructive. If you don't feel respected, end the conversation. If you aren't honored in doing so, you have a valid complaint. End of discussion.
Criticizing racist, sexist, cissexist, or otherwise oppressive behavior or assumptions
Here there may be a valid complaint, because it's limited. Criticizing anything should be acceptable, and it implicitly suggests that certain criticism is more protected than other. But while it's not comprehensive, it's certainly not objectionable in its limited scope. No action should be taken to prevent criticism; therefore, no action should be taken to prevent criticism of racism, sexism, transphobia, or any oppressive behavior or assumptions. That's just tautological.