Secondly, skill verification is a form of leaky abstraction and may not be what hiring managers want. It’s most often not about finding the most skilled candidate but rather the most compatible candidate. This can commonly mean finding the least sucky person from a pool of sucky people.
Hiring managers can game that by setting requirements criteria for a job. If you want extremely skilled people then get down to the metal and find candidates that like to work without tools or abstractions. If you super versatile candidates find people with experience in a bazillion different tools. If you just want a body to fill a seat that is quick to hire/fire select for the latest trendy framework.
The best way to determine the right candidate is to ignore the nonsense on their resume and just talk to people. Dig in and see what they really want and then challenge it with questions only they can answer. Most people are bodies just wanting to be hired without bringing anything special to the table so that’s what most employers target for. The real challenge here is finding people that are highly skilled in a market where exceptional skills outside the bell curve are not commonly rewarded, because these people will not self identify as awesome when looking for work in compatibility driven system. The people that most typically do identify as awesome tend to not be as awesome as they believe.