Content Modifiers : case insensitive ?

[JBoisseau-ByDeluxe]

Content modifiers are defined with a specific capitalisation : Temp,[Luminance]fL, DVIs ..

Actual CTTs regularly divert from the example:
Temp -> temp (sometimes)
[Luminance]fL -> [Luminance]FL (always)
DVIs -> Dvis (sometimes)

NB:
the webpage says [Luminance]fL
while the registry says [Luminance]fl

I wonder if we should:
A- assume a tolerance on the capitalisation for all Content Modifiers
B- keep as is (enforced capitalisation), but only fix the Luminance to "FL", uppercase