As someone who has been involved in fashion, art, and glamour photography for some time, I find the article's dismissal of cosmetology licensing to be careless and poorly researched.
Applying makeup is a licensed activity because of significant health and safety issues related to hygiene and proper use of certain products (such as latex, for example, as used in the movie and theater industries). You could very literally lose an eye, go into anaphylactic shock, or get a nasty rash because some village idiot decided to play makeup artist and didn't know what they were doing. People doing this really DO need to know what they are doing.
Likewise, bartender licenses are less about memorizing obscure drink recipes and more about properly working within the law around alcoholic drinks and potentially inebriated customers. These licenses are not a burden to obtain (working with a non-profit art gallery, we obtained them for some of our board members so we could legally serve wine at our shows), and they are a serious intervention to help cut down on drunk driving, alcohol poisoning, and underage drinking.
Here in Texas, the licensing agency recently got rid of mandatory licensing of interior designers (my wife is one) and talent/modeling agencies (which, again, I'm familiar with through photography). The result is a total disaster in both fields. To do an effective job, interior designers need to understand building codes, proper construction techniques, when to call in a structural engineer, permitting, blueprints and drawings, special laws around commercial furniture, etc. But without a license, anyone who watches a bunch of HGTV and thinks they are the next Joanna Gaines can go represent themselves as a designer, and homeowners and businesses *don't know what they don't know*. And in the talent agency world, particularly in modeling, there is a HUGE problem of outright scams, not to mention sketchy guys claiming to "manage" models or singers, who act more like wannabe pimps.
So yeah, maybe licensing can be a bit of a protection racket in some industries, but it's way too easy to deride someone else's education from a place of ignorance about the service they are performing and the risks involved in the decisions they make.
(Also, make no mistake, this article isn't about makeup or pints of lager, it's about an ongoing, long-term, well-funded dispute about what the differences should be between a doctor and a nurse practitioner. The arguments about other industries are merely window-dressing.)