This think tank report states that an F-35 can’t get through the Russian Integrated Air defense. Uhm - the F-35 can carry internal stores JUST like the F-22, at which point it is likely stealthy enough to do the job just FINE thank you very much. They start carrying on external hard points ONLY after we have Air supremacy.
Look at the campaign during Gulf War I - F-117’s went downtown, but other systems were used to blow holes in the “integrated” air defenses of Iraq before the rest of the air armada (and that name really fit in this case) came through to do their jobs. There were Apaches that came in and did Nap of the earth to take out Radar sites, and Cruise missles with similar missions. Then finally you had wild-weasel missions for anyone that chose to lite up their radar. They didn’t live long.
Gulf War 1 was 99% conventional aircraft! This report is just hot air.
The current generation of SAM systems developed by Russia and China are nothing like the legacy SAM systems deployed by the Iraqis in Desert Storm.
Have a read of this article about surviving the modern IADS.