Neither Ukraine nor Russia are using manned aircraft in any significant ways. They are at most used to lob gliding bombs from far behind the front lines.
> And naturally F-35s on that theatre would have been a game changer making mass strikes on Moscow possible.
And then what? Kyiv has been under relentless strikes from drones and missiles for 5 years. And Moscow was hit by Ukrainian drones several times.
You'll need to suppress all the anti-air defenses first, and it will likely be too costly.
It's like watching salami slicing happen in real time. It also forces a dilemma on Russia. Every move of GBAD to Moscow to defend against drone leaves an airfield uncovered. Move some to airfields and it leaves a refinery open. And on and on.
> They are at most used to lob gliding bombs from far behind the front lines.
You write that, and literally quote my point about F-35 making deep strikes against dense air defense possible in the very next sentence.