I would say the big outlier here are the JetBrains IDEs like IntelliJ, which have had zero-latency as their default configuration for 2 years now.

Also, it is worth noting, that the same person doing this research is the one working for JetBrains on optimizing editor latency: https://blog.jetbrains.com/clion/2017/01/clion-starts-2017-1...

So there are companies taking the editor latency issue seriously and that are close to fixing it.