You can't just bolt on other theoretical negative factors to change the usefulness of the analysis itself. This conversation is not about bad or irrelevant certificates— it's about certificates in general.

The candidate included them on their resume for you to evaluate, so evaluate them. Nobody's arguing that candidates with only free LinkedIn certs and nothing else should be given equal consideration to those with formal education.

The question is whether or not people with any certificates can ethically be dismissed out-of-hand because they list certificates on their resume. The answer is still no.