What makes you think it will work better against Russian theater missiles than it does against Houti clones of Iranian cruise missiles?
I said air superiority, which means those Su-35s, Su-30s, helicopters, drones, etc... I never mention missiles? It's well understood that Patriots perform poorly against missiles.
The performance specifications of the older versions of Patriot aren't better than the ones in the Soviet S-300 systems the Ukrainians had.
Yes, Russia likely had backdoor access and knows all vulnerability of all former Soviet hardware, including S-300, not surprised.
And it takes years, not weeks, nor months, to learn how to operate a system like that. For your info the USA does not allow Saudi Arabia to operate the Patriot. The systems in Saudi Arabia are operated by US operators. And this is the case in most countries which have the Patriot.
Which is why I said embedded "advisors" will be defacto operating it, either in-person or remotely? You don't think Ukraine will ask for remote operational support in interim? Unless Russia can crack NATO encryption, how would they even prove definitely?