Is he alive and well?
Yes, but I only have a source in Swedish (specifically the later part of the video). To summarize: The national media SVT has this ‘task-force’ that verifies/debunks claims being spread on social media. In the video I linked to, they compare the clip Israel posted of Netanyahu getting coffee with pictures the cafe took and earlier posted pictures of the cafe. The same was done for the outside of the cafe shown in a different clip. Everything was highly consistent and unlikely to be AI. The only oddity, a disappearing ring, is likely due to video quality andor/ hand positioning.
Dödsrykten och AI-anklagelser – det här vet vi om Netanyahu och ayatollan

Den nye ayatollans profilbild på sociala medier. En video som visar Benjamin Netanyahu besöka ett café. Båda påstås vara AI-genererade. Båda påstås vara bevis på att de två ledarna är döda. Till SVT:s Verifieringshjälpen har det kommit in frågor: Vad är sant i denna AI-härva?

SVT Nyheter