Does the service have to be stopped because it causes harm?
Does the service have to be stopped because it does too much good?
Is the overly skilled service eventually stopped by authorities?
By the customer?
By the service provider?
Is the service something highly unusual?
No.
No to all.
Does the service involve physically touching human beings?
Does the service involve animals?
No to both.
Is this an actual occupation that pays a salary?
Can this activity be done without any training?
Does this encompass more than one activity?
Is the service being performed for individuals who hire the person who performs it?
Is the service being performed for businesses who hire the person who performs it?
Is the service being performed for a government entity?
Is the service being performed on a volunteer (unpaid) basis?
Hitman?
No, man. 
Is the service rendered obsolete by the servicer becoming too skilled?
Is being less than perfectly skilled somehow part of the service?
Is the one offering the service the same as the one providing the service?
Is it a service that could have been offered a hundred years ago?
If one person achieves the too high level of skill, is another person able to take over the job?
No.
Yes.
Is the person testing something in the role of someone who doesn’t know anything about the product/service? Once they are familiar with it they can no longer play the role of a novice.
Is it anything to do with Trump and the Russia investigation?
Is being observed while doing it a fundamental part of performing the service?
Does the service have anything to do with information technology (computers, smart phones, etc.)?
Is testing or assessment involved?
Yes.
No.
No.
Yes.
Yes.