Last I checked, Russian airforce is absolutely dominating the airspace in Ukraine. Meanwhile, Russia has also demonstrated that it's far safer and smarter to use strategic bombers to launch long range hypersonic missiles without any need for stealth. The fact that you think Russian approach in Ukraine hasn't been effective tells me that you have an incredibly superficial understanding of what's happening there.

Meanwhile, as the link explains in plain English, Israel had to send agents to disable AD systems on the ground in order to accomplish their attack. In fact, last time they tried to do this, they had to turn back because their jets did get painted. Hence, why they ended up developing an elaborate new strategy here.

I'm not saying stealth tech doesn't give any edge at all, obviously it shortens the response window for the opponent. However, it's not a game changer that people seem to think it is, nor has it actually been tested against any peer competitors with advanced militaries.