I hear what you are saying, on the flip side, it has worked for me for the past 20 years. Even as a junior designer I’d come in with books and books of work, giant posters showing concepts mapped out and strategy… I always got an offer, frequently on the spot. So perhaps what is the accepted norm needs to be challenged. When I see a portfolio with only a few slides of radiuses boxes in it always leaves me wanting, or even worse is just forgettable. When someone looks at my work, I want them to come away with the idea “holy crap, this guy can and has designed everything.”… and has done so for some pretty big brands.
When I interviewed at frog I didn’t even bring a presentation, just 2 suitcases filled with production product, and told them to pick any one and I’d walk them through the story.
It is a pretty odd approach though, so it is worth questioning.