Now LoL has many automatic things in place to review games and issue judgments. This has led to where we are now (sort of). Over time that was removed too, due to toxic players not reviewing cases before issuing judgments. After the number of reports grew, Riot initiated a feature to let fellow players review those reports before issuing judgments.
In early years of the League of Legends servers, people told feeders and harassers to stop, then reported. The community has changed in many ways over the years, but the most notable difference that I see is how it enables negative behaviors. League of Legends has been around for well over a decade now.