This crosses into personal attack, and we ban accounts that do that on HN, regardless of who you're attacking.

If you wouldn't mind reviewing https://news.ycombinator.com/newsguidelines.html and taking the spirit of this site more to heart when posting here, we'd be grateful.

How is it a personal attack?

Aren't comments here to be able to show/tell my own opinion on a article/blog/whatever?

I'm really not sure what exactly is an attack.

Stating an opinion and being open for discussions.

You're welcome to share your view of the underlying topic or interesting questions, but please don't frame it as a supercilious analysis of the author. That's cheap, and a step into nastiness.