Unrelated in that professional engineering licensure is not something that just inherently applies to the entire concept of engineering, or would apply to anyone with an engineering title, that isn’t specifically claiming they are PE accredited. All PEs are engineers but not all engineers are PEs. Thats why I’m saying they would have done well with a separate term, rather than stick another word on the front. A medical analogy would be surgeons changing their title to “Surgeon medical professionals” and then getting upset that any non-surgeons are calling themselves “medical professionals”. Like you do have this special thing you had to go through all this extra work to achieve and you deserve your special title for that, but you can’t just co-opt a single word that is basically just a verb that accurate applies to multiple jobs across many industries, when that word has been in regular use, unassociated with your organization, for centuries. At least, you can’t do that and be upset that nobody gives a shit.