"that’s a warning the wheel wasn’t built right"
Yes and no. Most "average" bikes come with OEM wheels that are machine built with parts "just good enough." With today's ubiquitous disc brakes, many shops don't even bother to touch up the wheels, as a bit of wobble won't be rubbing any brake pads. Probably won't even notice it. Additionally, since no bike shop takes tires off their sub $8,000 bikes and radially trues and even out the spoke tensions, pretty much every bicycle wheel on the bike shop sales floor has wheels that will suffer this same mode of spoke failure in the future. This is simply the reality of the bicycle business.
It would be better to say, "This is an example of how non-hand-built wheels by an experienced builder fail prematurely."