So since the thugs of Donetsk don’t have an air force [unless you want to count the Russian one], and Russia denies having supplied SAMs to the thugs, then how were they shot down???
Air support fighter jets usually fly below 15,000ft, military transports also, well in the range of AAA and MANDPADs.
You love to call people who defend their homes from illegal junta "thugs".
So, I believe your heart is on the side of Ukrainian Nazis who burn people alive and murdered hundreds of civilians so far. Your choice. Only make sure you find better arguments to defend it.