The analogy about Nikki Haley is apt, to ‘pivot’ is trivial, to credibly pivot is another. I promise not a single Trump supporter suddenly believed Nikki’s change and it didn’t buy her any clout. If anything, it undermined her previous bet of ‘party will move beyond Trump soon’.
Similarly, Netanyahu pivoting won’t appease any of his hard core supporters. Also, this presumes that Netanyahu is some secret moderate trying to appease extremists rather than actually being a key proponent/leader of the extremist agenda. This would be like saying “Trump is looking for an opportunity to pivot toward a pro-immigration stance, but his party just won’t let him”.