you can only see stats when dead. if you don't like the scoreboard then unbind the key and be happy, that or stop holding tab whenever you're not in contact and focus on playing.
you just sound angry that people can see how badly you're performing and tell you to git gud or get out. the general population all play for themselves, when i play pub games i play as a lone wolf completing as many objectives as i can and if there is an observer ill use support to help everyone out, only when i play on my friends server do i throw out the lone wolf tactics and adapt to moving in formation and like a unit as i'm with others doing the exact same due to the increased difficulty of the server.
when i find out im the last one alive i always check the scoreboard to make sure so i know i can go full auto while defending.
having one person die does not influence the general populations way of playing the game at all, only hyper-milsim teams will adjust to things like that and those servers are generally password protected or reserved slots for clan members.
as i said, since you hate the scoreboard so much then stop using it and move on lol