There are definitely trade offs with Fairphone but it's unfair (no pun intended) to compare them with a company like Google without mentioning their strong points.

Fairphone does focus on having a better social and environmental impact, this comes as part of the price. It does also focus on repairability which also comes as part of the price. If those are things you do not specifically value (which is fine), that definitely makes their products too expensive in comparison with other manufacturers. The support side could definitely be better but as a small company, I personally thinks it's okay.

I have a Fairphone 4 and I'm happy with it, it's fast, takes good pictures, and just works. It has great support in communities as well. I was able to easily change a part of a Fairphone 3 (dead usb c port) and the experience there was just great, they really made repairs super easy.