If you're going to show chat logs without context, then why show them at all?
I literally just got chat banned for a game where I had 4 people in my game harassing me the entire time. Some of what I said was toxic, no doubt about it. But it was in response to each person in my team all of whom said infinitely more toxic stuff and in higher quantities. They also sat in base and waited for me to die 5v1 so they could spam ping my death. It was one of those games, then they (I assume) 4 man reported me and I am the one who is punished. There is a real value to context in a court of law, but not in the tribunal. People can flame, feed, spam, harass, and ping constantly and even go afk. None of it matter because the likelihood of anything besides verbal abuse being checked is extremely rare. And the victim can be punished as long as the rest of the team chooses to gang up on them.
This game should not promote this sort of bullying if it wants to punish real offenders of any sort of in-game crime. Over time I have noticed that the Riot Staff are significantly less interested in people who are actually ruining games, and more interested in people who are frustrated from having their games ruined. This logic follows with victim blaming since the person who is losing their time is clearly the victim, the person who is wasting time by trolling the game clearly has time to lose and does not care. But the definition of trolling is so ambiguous because there is not even a system in place to catch it. One would literally have to say "hello, i am intentionally feeding, or walking around in base, or refusing to group and farming top while they take our nexus" in order to be punished, and even then, multiple times.
The issue riot is having is reconciling which is more significant an offense, feeding, or someone saying "please stop feeding". The answer is obvious, but the methods implemented to punish players are the opposite. Chat logs intentionally show only the player who is being questioned which makes it even more of a problem because without context you are now even more likely to get chat restricted despite having committed relatively no wrong-doing. Where-as in game footage is scarce so the real perpetrators of serious offenses get off Scott free.
Too many times have I seen people intentionally feed kills, "run it down mid", and ignore their team and farm lanes while nexus is being taken, in gold/plat, where it is clear the player is not just terrible, and no punishment is implemented, they do so to get a rise out of their team. Even "pls stop feeding" to someone who is literally intentionally feeding, is enough to get a chat ban. Something needs to be fixed about this, otherwise your game will not be enjoyable for anyone who is an adult and does not have time to waste playing game after game with people who "don't care".