No number of stealth planes will help you regain the advantage in that scenario if your ground assets can't support them. If your own airspace is hostile and your ground radars/SAM systems are disabled, then your CAP/supremacy mission has already failed.
By for example destroying the enemy launch platforms. By intercepting enemy flights that would deploy those weapons. And specifically in case of F-35s, also by providing ELINT.
"Hypersonic" weapons used in current conflicts are nothing more than a glorified long range missiles that are useless if you can't launch them from the air. They're also currently statistically not significant due to their low amounts.
They seem to be taking out their targets (IRIS-T the other day went boom - was taken out by a sea based variant). We should probably consider getting some of those glorified systems going and to our allies as well. Ditto on the air defense side where we lag. While jet-planes are cool, pilotless systems are the future and that ranges from ML-enabled drones to faster arrows.
This is closer to how things worked in WWII, but not the Cold War or especially modern (eg. India vs. Pakistan) air combat. The ground attack role has largely shifted towards precision artillery and guided standoff-range munitions. You don't need a jet to attack ground assets, and you most definitely can't rely on a jet to defend against rocket artillery or FPV drones.
In any case, you're really just proving my point. Yes, an F-35 can "win" a conflict in a day by flying into enemy airspace undetected and bombing their presidential convoy. That's the sort of interventionist politicking that sickens everyone who isn't American or Israeli.
> You don't need a jet to attack ground assets,
It makes things much easier and you can project much further than with artillery. Just ask Iran.
> and you most definitely can't rely on a jet to defend against rocket artillery or FPV drones.
You don’t need to. You use them to make the guns and pilots go boom.
Your assumption is that the only thing that stops someone from bombing the US or Israel is moral scruple? I'm not interested in arguing who-went-first or root causes, because that can go on all day, and we all already believe that we know the answer. But really? You don't think Iran would've bombed the US, or Israel in a heartbeat if it had the means? You don't think the Huthis would bomb the Saudis if they could? You don't think the IRA would mortar the hotel where the British Prime Minister was sleeping if they could? Ooops. Of course, they actually did that.
I don't actually know enough to hold an informed opinion on the F35 and all this other war-porn [though my inner 10 year old thinks it is kinda technically cool] but the politics you bring forth are sickening to anyone who tries to remember /all/ the bad things, not just the ones done by people we don't like.
The two aren’t separate. If your jets can’t defend your ground assets then they’re likely to go boom. One way you can do this is to send your jets into enemy airspace and make their ground assets go boom, forcing them to keep jets in their own territory to stop that.