Ok, look: I know it feels bad being "accused" of #mansplaining. I know that most of the time we're "just trying to be helpful." I've been on both sides of this.
Here's the thing — if the person you're trying to be helpful to tells you that you are not being helpful, that's that. Accept it, apologize, and move on. 
Trying to "explain" and "clarify" will only make you look more like a jerk. Just don't. 
Instead, you can go and (re)read this stellar piece of advice:
https://anotherangrywoman.com/2023/01/18/how-to-give-advice-on-the-internet-without-being-an-utter-menace/ 
@rysiek This happens to me once in a while. Most of our rural broadband customer here in Eastern Poland are farmers or technical workers, or coal miners, but then you get an expert on BGP . And some of the young farmers know a lot about connecting to the Internet – they've been struggling to get reasonable performance from shitty connections for years. And if they do need advice I try to find out what is it that they don't understand and work through the problem.
