This is an example of what I talked about in my post yesterday:
If your concern is mainly with who is doing the oppressing, and dismantling the tools and mechanisms they use to oppress others, it might be easy to lose sight of the importance of analysing who are the people being oppressed, and how and why is each group being oppressed.
I think some modern ways of thinking tend to do this, by lumping all oppressed people together, be it black, disabled, mentally ill, women, trans, gay, or whatever.
@Choppingwoodcarryingwater you are lumping together being an immigrant, being a woman, and being poor, labelling the lump as being about egalitarianism, and contrasting that against authoritarianism.
What feminism does is separate out the strands of that lump and concern itself only with the 'woman' part.
There are other analyses, other schools of critical thought, other "isms", that are concerned with immigration and (separately) with poverty. And more that look at disability rights, racial issues, etc. etc.
Egalitarianism is the belief that everyone is equal and should have equal rights. But is does very little to analyse why some groups of people don't have equal rights in practice. For that you need to separate out the groups of people being oppressed and look at each one, not lump them all together and just 'fight authoritarianism'.