In my operational days there was a bit of discretion applied so that a change that would have no impact of a flight was not passed, for example, as the aircraft was flaring.
I'm sure you know this but FWIW in general once we're below a 1000' any RVR values ATC pass are for information only.
If we have legal RVRs descending through 1000' then we're locked into those numbers and subsequent change is irrelevant ( from a legal POV). From that point down we're much much more interested in monitoring for any equipment failures and acquiring any visual references, if any are needed.