I disagree; there is some definition of 'stupid' that exists in the same shape and form in most consumers. It stems from laziness, desire for showing off and instant gratification, and lack of critical thinking when being bombarded with marketing BS like cool visuals, gimmicky features and awesome keywords. The same self-interest leads to them being stupid and, usually, staying stupid.
The stupidity of the average consumer manifests itself in not wanting to "waste time" with some "nerdy tech thingamajig" (boohoo muh computer is slow, must be the viruses and need more RAM, lemme buy myself a new one, ooh look the slimmest model, lemme get that. Soldered everything? Non-user replaceable battery? Huh, wtf are those. It's slim and pretty tho) or comparing products on the shelf to make the best, most practical choice (it has X famous brand name that's associated with cool and expensive, great to show off to friends, especially on social media because everyone on there cares. Oh there's a vocal bunch speaking about bad reliability, poor quality that falls apart 1 year and 1 day after purchase and terrible price/performance ratio? Must be lies spread by dem haters).
Yup, pre-purchase research and post-purchase diagnostics (not even asking for much, just googling a problem to see if it's unfixable/too expensive to fix) are things today's consumers would rather not 'waste time' with because they clearly have better things to do that aren't a waste of time, like taking more selfies for Snapchat, raking in likes and loves on Facebook and Instagram and surfing the internet (anyone up for more shopping and getting 'inspiration' from friends on what to buy next to one-up them?) on their $2000 Facebook/web browsing machine and $1000 phone.
The best part is very few of these people learn from others and their own mistakes. They'll continue to buy the same crappy products because they saw a cool ad or all their friends are talking about it without any thinking or research. They'll stay loyal to overpriced brands with poor reliability because 'dat brand name doe' and continue with their need to see and be seen having/doing/wanting cool things. Simple reading to make an informed buying decision? Too uncool! F-that!