I’m totally with you! Furthermore, I think that long life cycle of Fairphone products here would come as a great advantage.
Look at the situation from this viewpoint: since the time when Sailfish X was announced only two generations of Fairphone were introduced to the market (Fairphone 2 and Fairphone 3). At the same time, with Sony partnership Jolla is in a continuous yearly race to catch up with new Xperia models: Xperia X, XA2, 10, now probably adaptation for 10 ii is in development. So, instead of three limped official Sailfish devices, we would have two, but with more functionality because development team would need less devices to disperse their time to. I would prefer this, and I know many would. Plus long life cycle of the device implies longer availability on the market, better hardware service, longer driver support, and so and so…
I honestly believe that failure of negotiations between Jolla and Fairphone has backfired us all badly in the end…