if you are s1mple and Zywoo
not if most your kills are enemies hunting you when they already won the round
Like everything else, it depends on the context
both important and overrated, depending on the perspective.
Heavily depends on the context.
In this case obviously not, as G2 lost a map 3-16 and their stats lowered drastically because of that. But overall this game is all about killing in the end, strats and teamwork just help you click heads or bodies if you're an AWPer. Obviously faceit baiters are just playing for kills and rarely have serious impact, but in the end stats do matter if you want to win the game.
Yes and no
Kd sometimes doesn't tell the full story
A guy can have 9 frags but he flashed well gave info etc