Almost exclusively the content that is not coming from government sources themselves is coming from from videos and posts being uploaded by Palestinians/Israelis directly.
Even if NPR and others have bailed from having an official presence on Twitter, I can almost guarantee you that individual journalists at said organizations are still probably on it all day scanning for content.
... which also means it could be coming from Israeli or Hamas (or Iranian or Russian or American or ...) propagandists posing as on the ground citizen reporters and there's nobody on the ground to fact check anything.
This is particularly true in the era of deepfakes. You don't even have to stage or mis-caption or mis-attribute photos. You can outright fake things. You don’t even need to be there. That on the ground reporter in Gaza could be in a basement in Idaho using Midjourney and Dall-E.
Even if the deepfake is detectable most of the hordes on Xitter will believe it. See, believe, retweet.
https://apnews.com/article/israel-gaza-journalists-safety-25...