From Google:
Imply means to suggest or to say something in an indirect way. Infer means to suppose or come to a conclusion especially based on an indirect suggestion.
So the inference here is that someone requesting a cosmetic procedure such as a facial tattoo needs psych evaluation with the conclusion they are less likely to be able to make that decision without lots of support and guidance?
Everything that carries a risk should indeed be discussed and explained by the person carrying out the procedure and the client, or patient if it's a medical procedure and all professions, including tattooists do this prior to said procedure.
There is a Tattoist and Piercing Union that campaigns for high industry standards. They liaise with councils around rules and regulations.
Did you know that the procedures around piercings for example, involve making sure ID is authentic, that parental consent is obtained on those wanting piercings who are not 18? That most reputable piercers won't pierce the ears of anyone under secondary school age? That a form has to be filled in with medical and allergen information? (Literally 20 questions if I recall). That every year a First Aid course is undertaken? Because without these things the public liability insurance could be null and void if something did go wrong?
My tattooist friends do similar. It is their livelihood and their art and they want to be safe, responsible and successful.
Extreme body modifications are already outlawed in the UK. As they should be I hear you cry, because tongue splitting and ear pointing is closer to medical procedure than adornment and carries greater risk. You can still go abroad for it though.
Professional tattooists usually have lengthy discussions with their clients about their art before going ahead. And they are within their rights to refuse a client if they are uncomfortable about anything, as are piercers.
I'm allowed to be gobsmacked that the old trope that tattoos / piercings indicate mental weakness is still being trotted out despite the fact that they have been mainstream since the 90s.
As for Botox (a poison) and fake tans from sun beds (cancer risk?) or anything else if that nature - your body, your choice, risks explained, professional indemnity in place, all hunkydory.
The question of what age someone should get a facial tattoo is down to them once they are 18, already enshrined in law, and they have to live with the consequences.
Just because other people don't like it doesn't mean it should be pathologised and considered the downfall of civilisation 🙄