I think it's just the world responding with a higher profile countermeasure to a systemic problem that could be handled more 'naturally' but isn't.
The good news is that there are many opportunities in the U.S. and West: The New York Review of Books, London Review of Books, The Nation, Mother Jones, Common Dreams, Tom Paine, Democracy Now, and many more. The Guardian generally supports those positions too; Le Monde does, last I knew, as well as Der Spiegel. You could read that kind of thing all day and never run out of content.
There are unfortunately very few leftist outlets right now of any real quality. WSWS, Evonomics, and Current Affairs are among the few exceptions.
Which ones?
Some of the sources you cited are somewhat to the left, although I would characterize most of them as progressive left and not "leftist," which to me implies something like democratic socialism, syndicalism, libertarian socialism, or something even farther left. (That said, The Nation does have a front page article up from Chomsky! Good on them.)
After 2016, I noticed that many progressive outlets spent some time dipping their toes into neoliberalism -- lots of subtly pro-capitalist and pro-interventionist pieces, basically cheerleading the pre-2016 global order -- and as a result I tuned out from most of them. This may have changed? I revisited some of the names you mentioned and I don't see it so strongly anymore.