You have a different definition of "malicious" than the general public. In fact most of us on HN do. That shouldn't be dictating what browser vendors think of as malicious extensions. Consider an extension that tracks your browsing in exchange for giving you promo codes to get 5% off on some purchase. Plenty of users have considered this kind of trade off and decided that the 5% discount is worth the privacy impact. Most HNers would consider it malicious. But if browser vendors start to block these extensions we would sooner hear news reports of tech companies being overly paternalistic.

You are not speaking for all users and you know it.