[Aldo_MX]

Dark patterns are not illegal, but they fall in the reputation loss category.

Taking your example: Ebay decided that they couldn't afford the reputation loss to accept listings with dark patterns so they updated their T&C to reflect that, but that doesn't mean that the action that ebay took was the absolute truth.

To name a different example about dark patterns: There are websites which color the "Accept All Cookies" button with the primary action color and they place the button after the checkboxes where you choose your cookies, in the place that most of us expect a "Submit" button. As far as the GDPR is concerned they're complying.

As a consumer it is your choice to stop doing business with persons and companies that use dark patterns.

The same applies to open source. You are seeing that the number of maintainers who are disrupting projects is increasing. Would you really trust your business to a person that you don't even know? It is your reponsibility to audit the code that you're using.