Dark side of professional registration
I'm a P.E. but I work in a discipline supporting a highly regulated field in which safety of life requires formal proof.
Such is not the case for most engineers. I respect their work and their ability to call what they do by the most straightforward and appropriate title. That said I do expect to see some education in the maths and hard sciences for one to call oneself an 'engineer'. When I see 'Microsoft Certified Engineer' on a resume... lets just say there had better be something else on there!!
The dark side of regulation in the US is that in many trades (plumbing, electrical, later HVAC) regulation pretty much existed to keep minorities out. In some locales official corruption enabled registration to serve as an enabler for certain organized crime rackets. Not a pretty history
Biting the hand that feeds IT
