I agree, but also disagree.
The most important part is being able to do what you say you can and to prove that claim. A portfolio probably does this better than anything.
What happens when you look at two different portifolios and objectively can't decide which one is best. I think most employers will then look, if they haven't already looked, for the credentials of training. So, that pretty certificate might be more valuable than you think.
Personally, I would look for the accomplishments and know-how. However, I worked in training for a large corporation. The paperwork (certificate, diploma, etc.) was usually required for the hiring of a professional.
IMO, a certificate is always a good statement about passing some type of training. The individual will have to decide if the price is worth the paper.
So, the need of a certificate might be dependent upon whom employes you, or doesn't employ you.
Hope that helps too.
Dave
