DFC,
You've done it again...
Having quoted a 'runway' definition, would you care to tell us which flights require a 'runway' as formally defined?
What is, and is not, 'normal', is not in your gift to define, I'm afraid.
Your comprehension of Rule 5 is also several sandwiches short of a picnic. The '500ft Rule' is not the one to worry about in this respect, in the UK.
Where did I say the runway was too short for CAT? Nowhere, because it isn't. However, the threshold is displaced for reasons irrelevant to my particular operation in that particular aircraft type, so when the law allows, I save brake wear by landing earlier.
Really, you ought to stop peddling your nonsense.