Using a workaround to circumvent the paywall seems too shady, because if the contents are worth reading, they should be worth paying the asking price.
How about if the facts the article communicates are worth knowing, but their treatment in the article isn't worth the (digital) paper it was printed on?
I can see your argument applying to editorials, but not-so-much to raw journalism.
You realize that 99% of the journalism you read, watch, or listen to every day is this kind of secondary "remixing" that deprives the original journalist-investigator of "their" reward for doing said research, right?
You realize society is perfectly okay with that, for the same reason we're okay with e.g. used book stores depriving the original author of a sale, right?
So then—having realized those things—what's the ethical argument in favor of avoiding a secondary source that happened to just plagiarize its text from the primary source, in favor of one that plagiarized its research but wrote its own paraphrase of the text? What does that get you, ethically?
(Note that I'm not trying to equivocate these things in service of making plagiarism seem less bad. The conclusion I hope you to reach here is that society is seemingly perfectly okay with certain types of plagiarism, and that that's weird and shocking and terrible and people should really be more angry about it than they are.)