Short answer: If the tower is reporting
runway visibility below the minima, you cannot continue past the equivalent point (1000' AGL).
Long answer: If the tower doesn't have RVR, then they are reporting a met vis, and you can factor this (if high intensity approach and runway lights are installed, x1.5 by day and x2.0 by night) so a "tower reported" 3500m airport vis becomes 5250m vis (for the purpose of continuing the approach). You still, of course, have to make the required (real, not "factored"!!) visual reference at or before the minima.
In any case, you seem to be looking for evidence of wrong doing in other operators in a specific case. Read the chart - the minima with FULL ALS isn't 3600m. It's 2850m.