I suspect that is because older generations remember the PLO as a major terrorist organization supported by numerous other terrorist organizations. Although most of the world still sees Hamas as a terrorist organization younger generations haven’t witnessed any notable Palestinian sponsored terrorist act until the Oct 7 attack. Even then as horrible as that attack was Israel still found a way to completely over shadow it with something much worse.
At the same time the world is also watching wholesale increases of violence against Palestinians in the West Bank will reading about illegal settlements.
That is astoundingly bad PR. It’s so bad now that any action Israel takes against Iran is seen as unilateral, excessively aggressive, and unprovoked which was absolutely not the case just 20 years ago.
Then to somehow still make that much worse the typical response to disagreements from political hardliners is to call people antisemetic. Older generations used to cautiously appreciate the sensitivity of such and tread carefully. Younger generations seem tired of hearing it from Israeli politicians.