Because it's crucial to have eyes on the ground objectively reporting the reality of the conflict and getting first-hand accounts from people they otherwise wouldn't reach from afar.
It's only thanks to these journalists that we know of the devastation as it is. If we relied solely on Hamas or IDF, we'd get muddied information.
Throughout this conflict, and after having watched very closely the war in Ukraine the past 2 years... The rhetoric coming out of Israel matches very closely with the same sort of propaganda and denialism Russia uses.