Really hits hard when you have to go to Home Depot to buy 6 spade connectors for $7.99 to use in a project with 3.3V 300mA max, when you can buy about 500 of them from Aliexpress for the same price.
Until you learn the hard way that they are not up to the standard advertised, if they happen to be rated in the first place.
It is common knowledge that Chinese manufacturers maintains at least three configs of the same product, the best one sent off for rating, the middle for knowledgeable buyers, the worst being the 500-for-$7.99 shit for the mass market, who buys nothing but the cheapest.