By your logic an OSINT account can show a picture of a SU-34 in the air with 4 UMPK bombs, write "On its way to Odessa" and people will think Russia has air supremacy over Odessa.
The US on other hand is flying over the Iran for a month so the claim that they started to use B-52 in addition to smaller jets is not extraordinary. It would be strange to deploy B-52 with GBU only to strike something on/near the Iranian border (where there are not many targets which would justify GBU usage) so it's a logical conclusion from the posted photo that B-52 can fly over the Iran (at altitude beyond MANPADS reach).
> USAF B-52H refueling from a KC-135 tanker on its way to strike Iran.
with emphasis on "on its way", so not "over" Iran. So not sure your link proves your original point (which, if I understood right, was that these Americans are flying these bombers over Iran itself).
It's also telling that the Americans haven't managed to gain their much desired air supremacy, lots of Dohuet fanboys in the US Military, hopefully this war will bring their Air Power ambitions a notch or two down (even though I have my doubts).