I understand what you're saying as well, but its not only to remove the amount of false reports.
Right now this system is pretty black and white. If you have examples of toxic in the chat, you're done. I'd say a majority of every instance of toxicity isn't exactly as black and white as the system is. There is so much going on in that gray area that is being disregarded, and because of this many players who do happen to take these matters to officers of Riot don't get much help because they're compared to that concrete, iron clad black and white system.
I can give an example of one scenario. A friend of mine recently told me he was playing with some friends. He was typing to one of them to get on discord, using his discord name. His discord name was something profane, and when he got reported it brought up that instance.
Now I know this has nothing to do with the report system areas I am referring to, but its just an example of this "Black and white" problem of the report process.
But to explain further; I as a player prefer saying nothing all game. I just use my pings all game, probably racking up the highest ping count. I see the people going back and forth at each other all game, its almost entertaining. I am not saying use this rule to catch out the fake reports only, but just to encourage people if they see a toxic player, leave him be, say nothing, so you can use your report. I enjoy getting the notification of recent report feedback, because I know i say nothing for a reason, to not end up like these other players who get punished. Of course you don't have to follow my lead and say nothing, but whatever you say could not be words of discouragement towards the toxic player, because you're also ruining my game even though I have done nothing.
Me as a player who doesn't speak, I see others instigate toxic players all the time, and I don't believe its fair they can ruin my games that way and go unpunished. They aren't always necessarily falling into that "black or white" area with there toxicity, but I believe one will think twice before they think to comment on another player.
Just some things I had to get off my mind,
thanks for your time