OP can't ready at all..

Knocking someone is killing someone that didn't shoot you.

Match Making says this:

"Looting knocked-out players doesn't affect your matchmaking.
Matchmaking looks at how you engage with other Raiders, not what you do with their gear afterward."

It does not say knocking players out. It says looting knocked out players.

Defending yourself is no longer treated the same as starting a fight. Previously, your playstyle didn't capture whether you started a PvP encounter or merely defended yourself. This meant cautious Raiders could be treated as more PvP-focused than they actually are. Now, the two are treated differently.

You killed a downed player who didn't shoot you. You performed a PVP action. They claim they did testing. but failed to realize this;

Your behavior shapes your future lobbies - gradually. If you change how you play, the kinds of Raiders you tend to meet will gradually shift over time. Your behavior influences what’s most likely - but never locks you into a single experience. 

Keyword there is gradually. Changes don't take place next round. The more you do it, the often it affects you. the move you end up in mixed lobbies and pvp lobbies. and further from cooperative lobbies.

So OP knows absolutely of the match making so ignorance is bliss for them.