They were at first denying that it was real, they claimed F-16 was not used. Then some Pakistani official on twitter claimed the AMMRAM was not even Pakistani but Malaysian (if my memory is correct). Malaysia officially rebuked Pakistan—not a surprise. As did Lockheed Martin India division in regards to the false claim Lockheed was suing India; moreover, the US state Department stated that the US never took any inventory of Pakistani F-16s, which contradicts the Pakistani claims.
Back to your original topic, I posted on PDF official US DOD documents showing Pakistan got the same batch of AMRAAM as Malaysia, as I stated above, and a mod on PDF deleted my posts, called me names and banned me for “trolling”. Posting official documents that busts Pakistani conspiracies is now considered trolling. I first heard the rumors that you mentioned from Windjammer on PDF, which is a full blown retard which spews conspiracies and disinformation with the protection of the MODs. It’s well known that PDF spreads official Pakistani state propaganda and the Pakistani government uses it. I’m pretty sure the rumor originated from Windjammer and some Pakistani government troll embraced the unsubstantiated and unverifiable garbage
Literally no one believe that Pakistan ever shot down an SU-30. Other none Indian and Pakistani forums and news outlets don’t even mention it because no one believes it. Everyone understands it the usual tabloid rumors that come from Pakistan.