fdr
Yes that’s all fine but only relates to expected performance and the legalities of dispatch etc.
Nowhere does it say thou shall not be 8ft over the threshold or 80ft when flying manually and visual, well it didn’t when I were a lad.
New thou shall nots were published regularly so maybe now it is written.
At one point it was in the manuals that we could land deep at xxx airports as long as we were down by x intersection due to length of rwy and taxi distance!
OK not a 747, equally not a small turboprop.
That did change eventually and it was just mandated touchdown zone, nothing really about how you got to it.