Nah we actually have evidence of an AD system. Some of the early debris had the classic peppering from an AD system. They have a proximity fuse. They release a lot of sub munitions. We also have video of AD engaging taken by locals. I saved it because I knew it would go bye bye.
So if AD was involved, likely a pantsir. An S300 is overkill for an Embraer.
And it was Putin who ordered that. This is playing with all the disinformation Russians are filling the information space with.
We will have wonderful reports of Prighozin spotting for decades to come, a la Elvis. This is to the favor of the state.