Hey Jakub, when I read your original response, here are the things that came across to me as pissy:

1. You impugned his motive: "you are not so much interested in adding a valuable comment but only in collecting followers from other writers."

2. You suggested he did not do a fair reading of your content: "probably why you choose not to see the obvious flaws"

3. You corrected him patronizingly: "please consider the tone of your message when you ask someone to give you resources."

4. You accused him of not doing his research: "There are plenty of videos proving this is a real problem on youtube, so open a channel from someone you like, and I'm sure they've prepared something about this very frequently searched topic too."

5. You suggested that something about him needs to be fixed: "I would see you as an expert, but a Lead iOS Engineer will not do this job just for the money but because he enjoys the platform itself, and if you have it the other way around, something needs to be fixed."

6. You accused him of "punching down" and being toxic: "I'm sorry that someone with 11k followers, which I congratulate you on, feels the need to be so toxic to people who haven't reached those numbers yet."

7. You told him to shut up (and condescendingly): "if you don't like my content, consider not responding to it"