> What I suggest is actually the F-22 is being using for signal intelligence over the Black Sea
That would be silly, we have planes that are specialized for SIGINT gathering, the F-22 is not one of them. We certainly have SIGINT aircraft operating near Ukraine, but they aren’t F-22s.
> helping guide in missles.
That’s not SIGINT, but something like an airborne forward observer for artillery/missiles. Which is less improbable than SIGINT, but still…
> Such as this attack
Ukraine has attacked airbases much farther from its current lines of control, deep inside Russia proper, with Soviet-era drones converted to loitering munitions. It is far more likely that they did the same thing in Crimea than that they conducted some kind of long range attack with F-22’s providing terminal targeting for some kind of SARH/SALH missile.
Even more likely than even that is that they used the Ukraine-developed-and-manufactured Neptune anti-ship cruise missile (the same reported to have been used against the Russian Black Sea fleet flagship), that has inertial/GPS guidance for land attack, and sufficient range to have hit that base from well within Ukraine-controlled territory at that time.