Aerospace engineers who build rockets do not have some certification body allowing them to be called engineers. Same with most electrical engineers working on almost everything.
If you think a government deciding who is an engineer is a *good* thing then maybe you should ask yourself why the United States which doesn't require this for the two non-software engineering disciplines has the best engineers in the world.
Really? What evidence do you have for that? Are you saying that companies like Airbus, Mercedes-Benz, Ferrari, ASML, Leonardo, Rolls-Royce, Dassault Aviation, Toyota, Bosch, Komatsu, Siemens, ABB, Mitsubishi Heavy Industries, Alstom, Vestas, Samsung, Sony, Hyundai Heavy Industries, Mitsubishi Shipbuilding etc. don't have world class engineers?
Outside of some exceptions which don't really exist in the US (shipbuilding and heavy forging) the American companies in those industries are highly competitive and often market share leaders.
Nope. There are many counter examples of companies being world leading without paying world leading salaries to their engineers.
It's a big mistake to believe that the only thing all engineers care about is $. Yes it is true for some engineers but not for all.
If you want to take the patent agent exam, your CS degree has to come from an ABET-accredited program, though many of the very good ones aren't (Stanford, CMU).
Likewise, federal jobs also sometimes seem to want accreditation but not always.