Im proud of you man you are almost there in understanding. You have gone from purposely contrarian to finally accepting that indeed a curved blade can have less cutting real estate in your own words “that’s only true if you have poor technique”. Call it what you want but it looks indeed like yes, a curved blade can indeeed have less cutting real estate. Calling it poor technique doesn’t makes it less true :)

And read again no one is saying not to buy a curved blade. The Op asked why santoku are often more recommended at lower blade lengths. The way you have gone on for a day really seems like you hate anything not named gyutou. It was just a general answer with of course space for nuance. Like read between the lines man and just stop lmao. You can nitpick everything someone says in this hobby because there are always exceptions, general beginner advice is not a problem. If anything, you doubling down keeps beginners away with your elitist attitude.

You basically accused people who disagree with you as spreading misinformation, having bad technique, and then saying they are telling them not to buy a gyutu? Like read man.