Yes. And, again, you fail to explain why the language was removed in the Mind Blade description between 3.0 and 3.5. Whether you acknowledge it or not, that removal is important.
I addressed that before- you chose to ignore it.
There is language
ADDED to the 3.5PHB and other books in the Complete series (the aforementioned language about fists being natural weapons) that apparently has
zero game effect according to WotC and the majority of players.
Whether they intended to remove the language about pp being required to manifest a Mind Blade or not is something we cannot know without asking. Until WotC actually addresses the issue, what we have is the RAW. As it stands, that language is not contradictory to any other language within the class entry.
The language in Wild Talent is vestigial. It doesn't even explicitly say that a PP reserve is required. It only implies it.
I disagree:
This class feature provides the character with the psionic power he needs to materialize his mind blade, if he has no power points otherwise.
seems pretty explicit to me.
This is not analogous to other instances of misplaced rules you've pointed out. Those are rules, wherever they're located. The language in Wild Talent is simply a reminder of what Wild Talent does, along with a vestigial note of why the class used to require the feat.
Sure its a rule. The text in the Soulknife entry is a unique modifier to a rule elsewhere in the XPH.
Wild Talent has, in its primary text, one purpose- to provide a PP reserve for PCs that otherwise wouldn't have one.
The section in the Soulknife is both a reminder of that function PLUS a mechanical addition to the text of the feat, a modification unique to that class. In that, its no less a rule than treating Monks' unarmed strikes as both natural and manufactured weapons, or their ability to use only certain weapons with FoB.
Really, you're asking for a level of drafting sophistication in this game that is often absent in the Codes of Law I deal with for work.