Really? Do ads for transistors describe them as "smart" or "magic"?

The idea here is not that abstractions are bad, it's that those that are frequently described by the people who made them as "smart" or "magic" are often not very helpful, and tend to do more harm than good. There are some exceptions, but good abstractions, while they may be described as "smart", don't usually include that in their name, and are rarely if ever called "magic".