Yes I know that is an issue. I'm saying that we also need to understand why the Queen only mentioned William's children in her 2012 decree, and if that reason means that the palace are or are not being unfair to H&M in denying their children titles.
No that is broadly a red herring - the 2012 decree applies only to William's kids so isn't directly relevant to Harry's.
However prior to either William or Harry having kids the default position under the 1917 decree was:
1. While the Queen is monarch only George is a Prince - none of the other children of either William or Harry receive the title of Prince/Princess (as those titles are not given to the great-grandchildren of a monarch except for the direct in-line, in this case George).
2. When the Queen dies and Charles becomes King - all the other children of William and all of Harry's kids are automatically offered the title of Prince/Princess (as those titles under the 1917 decree are automatically offered to all grandchildren of the current monarch).
So that's the default - but there appear to have been two changes to this - one is definite, the other widely reported.
1. That despite the 1917 decree - Charlotte and Louis automatically became Prince/Princess at birth rather than when the Queen dies (the 2012 decree).
2. That despite the 1917 decree Harry's children will not be offered the title of Prince/Princess when the Queen dies (the reported decision on the palace regarding the Sussexes children).
So on the basis that there reports are correct (I know that is an assumption) there has been a change from the default 1917 position that specifically advantages William's kids (well specifically Charlotte and Louis) and another change from the default 1917 position that specifically disadvantages Harry's kids.
You can see why they might consider this to be unreasonable, particularly when clouded by the race issue.