The initial reporting was simply that Israel did it. As usual, it took time for the facts to come out--the IDF was involved in a firefight with fighters that the cameras must have actively avoided pointing at (the standard reaction for a news cameraman will be to swing their camera towards things that are happening) and then the sound analysis got busted.
Fundamentally, it comes down to it's "news" if it blames Israel.
Terrorists kill innocent person usually doesn't make the news because it isn't particularly news-ish, rather it is expected. Also, this is hardly the first time that the media will report on an initial case and let it float away. The media can suck like that, but people generally don't want nuanced, long-term reporting.
I agree about terrorists kill innocent not being news. But authorities kill reporter is unusual and thus is news. So why is it a big news story when supposedly Israel did it, but a nothing when it's Fatah? Why the different treatment?
Did you miss the fact Shireen Abu Akleh was standing among a group of her fellow reporters when
they all came under fire? That Abu Akleh wasn't the only one shot? That all those reporters worked for different news agencies, were there to cover the fighting, and had ways to immediately get the word out that they'd been fired upon?
Did you even stop to think for one minute why the shooting of reporter
s witnesses by other reporters who came under fire from the same shooter at the same time, got quicker and more widespread coverage than the shooting of an off-duty reporter at the time when there were no other reporters in the area?