I imagine the dialogue between you and the salesman when you buy a pc at the store: "the CE compliment test is done right? The license is paid? The rights holders have been contacted? How much earn the people who made the product? They are declared? They paid their taxes? Is the packaging gluten free?
Sounds like you have not bought electronic items in a very long time, or maybe you have dubious sources? Have you not noticed the pile of papers that come with just about anything you buy? Look at them, there is typically at least one sheet solely about safety and regulation conformity, and links to the support sites of the manufacturer where you can read in detail about exactly what conformity regulations the product is supposed to adhere to.
But my original question here, which somehow got lost... what entity has the responsibility for the CE compliance? Is it Majsta personally? Is it "the team"? What about V600 boards made by Kipper? With other hardware, there is rarely any doubt about who is the seller and who is the manufacturer, but in this case, with various "team" constellations and "volunteers" here and there doing the manufacturing, there is plenty to be doubtful about.
As for what I have bought myself - yes, I have returned products because they, after a little testing, turned out to not adhere to the regulations the product was marked with. Most times, the reseller were only happy to remove and recall the products, but in a handful cases I reported to Forbrukerombudet (The Consumer Ombudsman), who then did the follow-up and every now and then kept me informed.