I didn't really start participating in AX until spire sites became a thing, so my Thargoid kills is really low. I'm surprised that my very low kill count is still more than 80% of players....
My first "strike back against the Thargoids" was 3305 (2019?) which would have been a handful of scouts. I killed some scouts before taking the stance that I wanted to be friendly towards Thargoids. After which I did not participate in any more AX until the stargoids/titans arrived, having finally given up on FD providing friendly interactions with Thargoids. So, all of my 280 kills, minus about a dozen, have occurred in the past several months.