When I started league that was a legitimate strategy and I saw it work over and over and over again. If you could get the enemy team to start arguing with each other it was almost a guaranteed win. Sure people got reported but as long as you weren't cursing at them or using racist language or things of that nature you wouldn't get in trouble. After all you were just taunting them and that was OK because taunting wasn't toxic. However....
Now-a-days Riot has taken it upon themselves to be our therapists and seeks to reform our 'bad behavior' and anything and everything you say can be considered 'toxic'.... for example I just finished a 3s game where we were winning, I was 4/1/2 and had been chatting in all chat with the enemy team all game long. Things like... "that chase was exciting" As I chased their skarner who nearly gave me the slip three or four times. "Why did MF build a last whisper? None of us have armor..." "(replying to a shen who asked who fed me) Well I have 85 farmz and I have killed you all a few times so... I fed me?"
Nothing 'toxic' there just friendly conversation. The jayce on my team was pretty silent, he said ty when I came to save him from being killed after he had nuked the MF in a 1v2 and was then being chased by skarner. The enemy Azir chatted back a little... MF was saying stuff like "wow" "are you srs?" "come on..." because she was cannon fodder.
But our shaco... he told me he hated me mid game. When I was doing really well. He muted me and said he was going to report me for verbal abuse. Not sure why. Did I say something offensive to him? not that I know... Did I insult him directly? nope not in the slightest. It made 0 sense to me and it still makes 0 sense to me. In his eyes I was toxic.
Every thing you say can be misconstrued as being toxic these days. It's dumb. No, you can't taunt the enemy team anymore. It's toxic and will get you chat restricted or banned. Even if you do it without swearing or being racist/sexist. No, you can't talk bad about your team to try and bait the enemy into a baron or dragon where your team will pounce on them. For one your team won't go along with the plan because you talked bad about them and they will report you at the end of the game. Doesn't matter if you tell them the plan before hand, they are 'toxic' crazed.
Everyone is 'toxic' crazed and it is Riot's fault. Yeah, there are some players who are actually toxic and previously Riot was doing a pretty poor job of banning them and so lots of people would be exposed to them. But then Riot started this report happy trend and now it's turned into a craze where everyone reports everyone else because we are all toxic. Chat restrictions for everyone, happy new year.