There is currently a Twitter thread where people are complaining about things they didn't like about the movie, and one of them is how valid Riddler's motivation and actions are and how batman completely tramps on that. I feel like a lot of people just don't get that Riddler flooding Gotham is only crazy because Bruce doesn'tyet understand the scale of corruption in Gotham. It just seems crazy to us but based on the Batman two interviews and what we are to expect from the part two, Matt Reeves pretty much tells us the entire city is corrupt. There's something wrong with the city. This is sensible solution in Riddler's eyes because its too ingrained into the structures of the city. You can't weed it out. I wanna liken this to a parallel between Jesus and the Old Testament God, where God simply destroys everything wlong with the innocent. It's an easy solution and Jesus comes in and things are a little more lenient. The innocent don't have to die with the good.
In summary, i don't think the movie completely trampled on the Riddler because we will begin to see understand reasoning in part 2.