While he certainly wasn’t sensitive about how he said it, he did state is was sanctions related.
All it takes is reading the article to see why it was done. You clearly did not do that and instead inserted your own agenda.
I think the point he’s trying to make is that he works on specialized network gear for enterprises and really isn’t the right person to go for IT support for your home internet issue. Not that you’re beneath him.
I kinda understand too, I have spent a lot of time in highly specialized technical domains and people often then ask me for tech support for things like their printer or whatnot that I am ignorant of.
I used to be more sensitive to feeling like other people were getting more recognition for less work.
Over time though I’ve grown to realize that usually they are just doing something that I don’t fully understand yet, and I’ve gotten far greater rewards from trying to learn from them.