I wonder why they put '/e/ OS' on this instead of standard AOSP or LineageOS. The UI looks like an attempt to be as close as possible to iOS - but I'd imagine the target market for a Fairphone 4 and the target market for any iPhone has nearly zero overlap.
Of course, assuming you can just put your own ROM on it, it doesn't matter, but it just seems like so much work for little to no reason to me.