I don't think you need to justify why you're writing in English nor why you used the tag polish.

As @mmmmkkkk311 said, [he and] everyone who follows the polish tag should be grateful that they found your post. First of all because you have good content. And secondly because you are Polish.

I understand that they want to reduce the amount of spam or taking-advantage of that tag, but the bot seems a bit much in this situation. Considering you were using the tag innocently and sincerely (my assumption), I wouldn't pay any mind to any negative feedback received.

Czesc!