It is an attack on using ligatures in code. It's not hiding that. That's the point of the article.
An argument, even one with strong language, can be about whether or not a tool is fit-for-purpose. This is allowed. This is discourse.
Right now, politically, a lot of arguments are actually attacks (on specific groups of people) in disguise, and I sympathize with your confusion. But arguments do exist. Not every argument is an attack.
I can't link to this book often enough: https://www.goodreads.com/book/show/29363252-conflict-is-not...
But metaphor is imprecision and unnecessary colour. Be clear and precise. Use specific language.
This is admittedly prescriptive usage, but I am prescribing this antidote for an overheated era, full of overwrought language.