System Engineering is a technical profession. I honestly don't think is does anyone any good to avoid calling nontechnical SEs bad at the job. The truth is important especially when it leads to the development of metal tubes that fly 150+ people through the air at hundred of miles per hour.
With that said, a nontechnical SE is a sign of a fundamentally broken system and org. Someone had to hire them for the role. Meaning they were interviewed and deemed fit for the role, likely with room to grow given more experience and opportunities to learn from. While I would say a nontechnical SE is bad st their job, stopping there doesn't fix the problem at all and its important that the context of why they had that job isn't lost.
With that said, a nontechnical SE is a sign of a fundamentally broken system and org. Someone had to hire them for the role. Meaning they were interviewed and deemed fit for the role, likely with room to grow given more experience and opportunities to learn from. While I would say a nontechnical SE is bad st their job, stopping there doesn't fix the problem at all and its important that the context of why they had that job isn't lost.