I don’t see Medium “losing sleep” over me lately.
And you mentioned social justice and other points of focus that News Break doesn’t seem to have, but other platforms (like Medium) can say they focus on these issues until they’re blue in the face, but if only a few writers find success talking about these issues then they’re no better.
Wherever you’re posting your work, relevant, click-baity stuff works best. At least News Break is open about it. I’ll take a guaranteed $1,000 each month over Medium paying me $2,000 one month and $300 the next any day.