I am actually glad that Fairphone did not keep feeding the false idea that improving the camera by replacing the module is the miracle cure that many expect from it. The biggest improvement for my FP3+ camera was switching to a different app. I have advised people against upgrading the FP3 (without plus) camera ever since and strongly recommended trying the app change instead.
Unfortunately many users still believe that it’s all about specs (more megapixels). I think the only hardware specs that would make a huge difference now would be sensor size.