Except you get the firmware updates for the included Qualcomm SOC for way over the regular 3 years, you get very cheap parts for ALL components, full component and electric schematics ( Louis Rossman recently made a video about it).
You don't get much of that at once with a drop shipped phone or big brands either.
With shift flashing and rooting does not void warranty. With fairphone at least rooting does, don`t know about flashing tho. There is a community for degoogleing for sure tho.
Written from my fairphone after the Wifi chip on my shift died after 2.5 Years and it was to expensive to fix.
That reads pretty clear to me. If you use root privileges to cause damage to your phone, that's the same as using a hammer to cause damage to your phone and obviously not covered by warranty. As long as you don't damage your phone with root privileges (pretty hard to do IME), you should be covered by warranty.
Cannot see modules for sale in the shop which is rather strange for a modular phone. There is no details of their sourcing concerning rare earth parts . They push the recycling part real high when their documentation shows 450 Kg/year of effective recycling, where does the rest of their current devices come from? Finally They push consumerism quite far in their shop with their bundle buy our current phone and you get a free upgrade towards the next one we launch.
And what about the bikes they also make and sell? Making one type of good product in such a niche market should be focusing enough not to be distracted in making other household products with vastly different supply chains, especially when you aren't a multi-billion conglomerate.