Unfortunately I think a lot of people just have zero understanding of how the smartphone industry works. They think small manufacturers like Fairphone just have free reign to get whatever parts they want, offer updates for however long they want, etc.

The reality is that Fairphone have to find a way to work within the system that has been created by big tech. That means selecting parts based on their suitability for the long-term support goals they have. It's one of the reasons why the specs are mid-range, because these parts stay in circulation for longer. For example, the 4 had a very generic 60 Hz IPS notch display because it was a widely used panel within the industry at the time. Now that higher refresh rate OLEDs have become more common on mid-range devices, Fairphone has been able to put one into the 5.

You have a Qualcomm QCM 6490? Google told me, there is basically no phone out there that uses it, because it's an IoT SoC, not one made for phones.