they’d have to be pretty damned poor performers for the IDF to retire them from deployment, especially given the magnitude of the Iranian/Fakestinian terrorist threats
Even if it’s 10% effective, Ukraine should take it. Better than nothing.
And people who worked with those systems tell me that the Patriot system is exactly "a pretty dammed poor performer". Better than nothing. Too expensive to use against low-cost swarm attacks. Useless once you run out of missiles. Requires fixed emplacements which take a lot of time to move.
The Israelis make better stuff now on their own.
The requirements for air defenses have changed considerably from when the Patriot system was designed. Systems must be very mobile with almost zero spin-up time once stopped and activated, and systems must deal with large swarm attacks.
The balance of force favors the attacker right now.