If I'm using HTTP, and my traffic is unencrypted, there isn't a vulnerability.
If I'm using HTTPS, and my traffic is unencrypted or can be decrypted, there's a serious vulnerability!
If I'm connecting to WiFi normally, and expecting that I can be tracked, there isn't a vulnerability.
If I'm connecting to WiFi using this privacy feature, and expecting NOT to be trackable, yet someone is still able to track me, there is a serious vulnerability!
The HTTP comparison helped me understand the issue.
This has to do with a bug seriously compromising a feature. It does not reflect the overall security rating of the entire device. If I have a one-way data diode sending telemetry from the flight controller to a passenger's entertainment console, it works as intended - which is why they put in a layer1 one-way diode. When you have a feature, you use that feature for a scenario where it is useful.
If the flight controller data diode has a second fiber and allows it to be hacked from a passenger seat entertainment center, that is a high severity. It does not mean every network switch has a high severity security issue, because we don't put those into flight controllers that hook up to entertainment centers.
Let's do a car example. If I rent a Uhaul to move my piano, and it splits in half from the weight, this is a serious malfunction. It does not mean the mini-coop croaking from a piano loaded on it's hood is also a serious malfunction.
Let's do a food example. If I put an empty metal frying pan on a stove and it bursts my house into flames, this is a serious problem with the frying pan. If I put it in the microwave and it does that, that's not a problem with the frying pan.
You can apply this anywhere:
FDE being broken.
Zero days being used on journalists.
Security theater post 9/11.
Your 4 y.o. choking on a toy deemed unsafe for age 0-3.
Devices reporting their MAC is standard practice. All these apple devices did it as standard practice as well before iOS 14. Yet, they added the buggy feature in iOS 14, and get a high severity CVE in return. Just fascinating. How does this work? Does it imply other devices that report their true MAC address are deserving of a high CVE as well?