"in practice"? Disrespectful, of course, but also not true.

In practice, most designers know what they are doing as well as you know your job. If yours doesn't, you hired a quack.

Here. Try this, in practice, most business owners don't know what they are doing. In practice, most programmers write shit. It's easy to bitch at artists because most people don't understand what they do. Don't be one of those people.

In practice, most designers know what they are doing as well as you know your job

I would qualify that as most graphic designers know what they’re doing, when they’re working in graphic design media: logos, magazines, billboards, and other print media.

Unfortunately, our industry (software) has shifted towards hiring graphic designers to do user interface design, a task which they’re often grossly unqualified for. This is how we get interfaces which are attractive but frustrating and difficult to use, both for beginner/non-technical users and for expert/power users, for different reasons. Beginners need intuitive interfaces with high discoverability for the most important operations and power users need efficiency and clean access to automation tools for the most common tasks.

Graphic designers often sacrifice power user features entirely in favour of minimalism. They also sacrifice intuitiveness in favour of their own artistic vision. In both cases they frequently sacrifice information density in favour of minimalism, making it hard for users to quickly locate the information they need. This is especially egregious on mobile-first designs where the accuracy of mouse pointers and the information capacity of large displays is ignored.

Tons of consultants are missing expertise in their clients' wheelhouses. The client and consultant each have domain knowledge, and when those domains overlap, there might be conflicts.

If you hire an architect to redo your house, it's fine to say "I see where you're going with this thing for my kids, but I know them and they will never go for it."

Which types of designers? Because by the way you said "artists" it seems you're referring to graphic designers not UI/UX designers which, while they may make pretty websites and apps, are not artists and the article explicitly says to not treat their artifacts as such.

The website is a tool to get customers and most designers do not know marketing, scaling or growth engineering because it's not their job to know, it's the marketer's job to say, let's add an onboarding flow with these features and the designer collaborates with them on what it should look and work like.

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> In practice, most programmers write shit.

I mean…………