Because they probably copy-and-pasted the corresponding Fairphone 2 support article over to the Fairphone 3 section and tweaked it a little here and there in a hurry, see the wording here for the Fairphone 2 … https://support.fairphone.com/hc/en-us/articles/115001886586
For the Fairphone 3 it makes no sense this way to me, perhaps a case for this list here …