No, but there can be more effort put into each case. It would exponentially inflate the time spent with the removal of toxicity, but it would more accurately portray what the root cause of frustration is. Rather than asking each person who gets trolled to ignore the person and play the game out, inevitably that just doesn't work because the player is unable to handle the griefing multiple times a day.
This is an important issue because it can erode a player base more rapidly than it otherwise would. I don't think it will get traction that it deserves because of the issue of time spent per removal of toxic player already. But it has already put an end to my spending of Riot Points because i know I'll eventually snap because of the amount of junk that happens in a normal game or ranked game. I've probably gotten reported a handful of times because i've gotten fed up, spaced out here and there over four years of playing ranked. I liked using unskilled player report a ton because it was an easy way for me to release frustration even if it didn't mean anything on the players record.
The key question I think needs to be answered when doing review of a player is what did the other player do or say in response. Did the player under review initiate, or did they respond to someone? Did they start with reasonable expectations, such as "play safer to reduce the amount of gold the other laner gets, it makes it easier for us to overcome a bad game" only to get told "shut up your bad"? Or did they start by trashing the player's skill level? The back and forth conversation when i did work on the old tribunal system told a TON of the story, and often impacted how i responded. There were many times where i wanted to actually punish the other player more than the player under review in certain games back in season 2 or so.
I'm rambling now on a post that isn't likely to gain too much notice from riot or anyone important, but it beats gets some of my pent up frustration out at least.