125/75 can only be used if crew can determine things like centreline lighting etc.
Downgraded equipment such as removal of centreline lights can reduce this capability.
Think about it, if you can land and require 1200m as nil approach lights, no centreline lights, no touchdown zone lights (BHX 15 at present for instance due WIP) then on rollout you need guidance of some form. FD's don't contribute on the rollout, and without lights on the centreline and at night centre line barely visibly... RVR's are increased for a good reason, not just during approach.
Granted however, only TDZ RVR is required for a Cat 1 approach.