You don't need to generate fake videos for that example. State of Isreal have been killing Palestinians en masse for a long time and intensified the effort for the last 4 months. The death toll is 29,000+ and counting. Two thirds are children and women.

Isreal media machinery parading photographs of damaged houses that could only be done by heavy artillery or tank shells blaming on rebels carrying infantry rifles.

But I agree, as if the current tools were not enough to sway people they will have more means to sway public opinion.

Hamas has similarly been shooting rockets into Israel for a long time. Eventually people get tired and stop caring about long-lasting conflicts, just like we don't care about concentration camps in North Korea and China, or various deadly civil wars in Sub-Saharan Africa, some of which have killed way more civilians than all wars in Palestinian history. One can already see support towards Ukraine fading as well, even though there Western countries would have a real geopolitical interest.