It is a bit sketchy when a website has a page with legal information but do not seem to be a registered company based on that. I think they just used some general text, but the last point in their privacy policy is the following:
Your use of this website and any dispute arising out of such use of the website is subject to the laws of Poland.
But since they make no mention of a company name, i cannot confirm they are actually from Poland.
It might be valuable information and it's a good thing you care, but I think this is a case where the content is free because you are generating the profit. Not clicking links is definitely a big part of preventing them making money off you, but they might still collect data.