Toxicity from other team

why is this becoming an occuring problem. is this a way of making a person tilt to win the game? this better be punishable by riot. if a person is being camped + camped/dove + camped/dove/flamed by enemy and own team, there's a huge problem. the emotes that's in the game's sole purpose is to act in an unsportsman way . ffs one of the emotes is even called taunt. why is this here? is psychological warfare a strategy? i've played games where the enemy jungle dives me, says "feed gg ff 20" and my own team isnt flaming until the enemy jungle promotes the flame enough to encourage my team to flame me. why does these things happen? winning becomes so important that throwing someone under the bus is a viable strategy?