Thank you for a very insightful post, Puf
While I agree that the so called "educational" part is very important, we also need to remember about the user experience. Most of the solutions you suggested could potentially harm the experience of users who are already aware of risks and make informed purchasing decisions. And we're actually talking about the majority of our userbase, according to our polls and internal clicks statistics. We really don't want to divide users into "bad users" and "good users" - GG.deals needs to work for everyone.
The red bar on the image you suggested, could ironically make the keyshops... more visible. The entire layout of game cards is rather minimalistic at the moment, so from the UX stand point, adding some red elements would make the section stand out more. The users' eyes would automatically be drawn towards keyshops, potentially resulting in less clicks in the official store section.
You were asking about the "poor developer" image that was removed in the new layout. The reason why we removed it was, once again, UX. Multiple users complained about that pop-up, critising how annoying it was. While you may say that "it's good it was annoying", we really don't want users leaving the site due to poor UX.
Having said all that, I do respect your feedback. The work on the new layout is not finished yet and we will certainly look at how we can improve the educational aspect of GG.deals, without harming the UX. You may have notised that we recently redesigned the menu to make disabling keyshops more visible. The switch in the user menu is accompanied by a warning about the risks. It shows we constantly have this issue in mind and it will stay this way in the future design improvements.