Bart, I see what you have posted but consider this; the FAF may well be at 1500'. There may well be one or more other platform altitudes on the approach from many miles further out than the FAF.
If you want to avoid all these other obstacles then you better make sure that you apply the temperature corrections to ALL the altitudes from the MSA down to touchdown.
Clearing obstacles from the FAF will not stop you hitting the high ground at 20 miles out.
Whoever wrote that never flew into high ground!