The IEEE documented that a little different:
It is the IEEE-USA position that:
• Individuals who have graduated with an engineering degree from an ABET/EAC accredited program of engineering education should not be prohibited from using the title “Engineer.”
• The protected titles “Professional Engineer,” “Licensed Engineer,” “Registered Engineer,” and variations thereof, should be reserved for those whose education and experience qualify them to practice in a manner that protects public health, safety and welfare -- and who have been licensed to practice engineering by a jurisdiction.
From: https://ieeeusa.org/assets/public-policy/positions/workforce...
The objection is IMO as linguistically specious as the one aimed by MDs against PhDs. Both are entitled to the honorific Doctor, and context is as important as anything else.
Just to clarify, there's no issue in Canada with "software engineer" specifically. "Engineer" is the protected term, and you have to be licensed to use it. So the issue applies to calling yourself any kind of engineer without being licensed.
If you are a licensed professional engineer in the software field, you can refer to yourself as a software engineer. This is just uncommon because there are not a lot of programs that grant BEng in software, the licensing is rarely relevant, and most people take CS anyway.