This is simply not true, although I suppose it depends on the definition of naked. Here's some random examples - although like anything, whether it qualifies as propaganda depends on one's beliefs:

- When the previous US president wanted to pull out of Syria, or at least scale down the activities there, a bunch of headlines to the effect of "[President's name] abandons the kurds, leaving them to die" were written, and went straight to the top of Reddit. (This is a classic war propaganda technique where there's always an excuse as to why you can't end a certain war, while failing to account for the negative effects of continuing wars, or the facts that many of these "problems" only exist because of previous foreign policy blunders and doubling down on those blunders simply doesn't help)

- Without going down the COVID rabbithole too much, there would routinely be articles that either (a) spread Chinese-state-originated propaganda videos of stuff like "man randomly collapses in the middle of the street", (b) articles that would credulously take China's metrics at face values, (c) scientific publications that immediately denied the possibility of non-naturalistic origins of the virus, (d) articles intended to shame those who don't believe in masking as an intervention, etc

- (This is a fun one since many won't agree) Many articles raced to the top which made just completely wrong statements about the portfolios of firms like Melvin Capital and basically depicted the WSB gamestop fiasco as a classic david vs goliath narrative, instead of the reality which was for a brief period of time it was a real short squeeze and then almost immediately became a classic bubble/pump and dump scenario that had no connection to fundamental asset valuation. (To be clear, in a short squeeze stock prices can easily be pushed past the "intrinsic value", but so long as there's still a squeeze it is not irrational to buy the asset. However, once it's no longer actually a short squeeze and is now just a normal bull-run / bubble, an article selling the david v goliath narrative is now propaganda)

- Here's a headline that's #2 on /r/politics, which I just visited to find the first headline that counts as propaganda in my book: "Conservatives Are Furious Biden Delivered a Non-Insane Presidential Speech" (regardless of what you feel about the speech or conservatives, it should be trivially obvious that they are not furious about a "non-insane" speech)

- Any of the dozens of articles about the "Capitol Hill Insurrection" which grossly exaggerated what occurred as an attempted coup instead of the reality which was a bunch of (largely deluded) self-styled patriots who changed and prayed and took stupid selfies inside the capitol building (note: me saying that it was grossly exaggerated is not the same as saying that there was no wrongdoing, etc)

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I do think it is true though that "articles which are clearly propaganda to the average user" i.e. one thats go against the status quo of a cite will be downvoted. But propaganda in the other direction won't because they will never think of it as propaganda