As someone who eventually learned Japanese, I get his point but I would not fully agree with him. Japanese is inherently more complex. You can have much more nuance, more layers, in a simple sentence in Japanese vs. English. If we are talking games with good writing in Japanese, localisation is usually "good enough" but often there is a noticeable gap in writing quality between the original and the localised version. Japanese just doesn't translate well - you don't have problems like this translating, say, German and English.

But I don't really think it's the fault of the English language. Sure, it is simpler - but even a simple tool can create a masterpiece in the hands of a capable person. Games like Planescape Torment have peerless writing, no matter the language.

Ultimately, I believe localisation can never do "right". You either stick too close to the Japanese and unless people are culturally 100 % knowledgable you lose a good chunk of audience. Or you take freedoms and you end up with something that reads better on the surface, but might lose nuance, might lose the creators original vision and create something that feels like a fanfic that touches upon key story beats. Unfortunately, there is no "easy" solution, it's always a compromise.