These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Fanon Discontinuity: Thanks in no small part to incompatibility with DuckTales , the Carl Barks and Don Rosa comics (though it could be argued this is an Alternate Continuity and not meant to be), and the overall different tone of the show from what came before (though that is the point of the show). The House of Mouse versions of them also occasionally dress as they did in this series as a Mythology Gag.
Interestingly, the Quack Pack version of the nephews actually made a short appearance in in either PKNA or Pikappa, tying that series together with this one (it was also their only appearance).
So Okay, It's Average: For people who looked beyond the Ducktales comparison and did give it a chance. It's not a mind-blowing show but it is pretty fun and nice to see Donald actually hanging out with his nephews once more (he only had a cameo in Ducktales).
We're Still Relevant, Dammit: How most fans usually see the show, though a majority of them are hardcore Ducktales fans who didn't like the changes.