Something can be both unethical and commonly done. In fact, some quite seriously unethical things were commonplace for centuries and others are commonplace now

Something can be both unethical and commonly done. In fact, some quite seriously unethical things were commonplace for centuries and others are commonplace now even though most consider them unethical at heart. Skipping ads needs to be ethical or unethical because it is, that it is done is irrelevant.