Oh my there are a lot of inaccuracies here to digest.... Let's start with this first bit first:
As @Luminara pointed out, aside from Infiltration and Super Speed, no other TRAVEL POWER has an inherent stealth component. Period. Adding in a unique IO set bonus to a travel power using a strawman argument. Argument aside, these unique Stealth IOs need to be catalyzed beforehand or the player needs to be the appropriate level (+15) to slot them, so no you are incorrect in claiming that is a sufficient data point in comparing available travel powers that have a stealth component.
Just to reiterate my point further, here is your same argument on another power - Cold Domination's Infrigidate is a Ranged, Foe -Rech, -SPD, -DEF, -DMG(Fire) power. It does no damage inherently, it's meant to be a debuff power. Because of Set IO bonuses and procs, players can make this power do a decent amount of damage by adding Impeding Swiftness: Chance for Smashing Damage proc, Shield Breaker: Chance for Lethal Damage proc, and Touch of Lady Grey: Chance for Negative Energy damage proc. But doing this doesn't make the power inherently a damaging attack, just like adding a Stealth IO to a travel power doesn't make the travel power inherently stealthy.
So, again you can say what you want, but I will chime in to tell everyone that what you are espousing is inaccurate.
Again, you're entitled to arguing - against whatever your perceived injustice stems from, perhaps its the sun rising and setting, but doing so doesn't make it stop happening. It is laughable that you suggest that these volunteers made up an excuse instead - you know what, can you in your infinite wisdom and understanding of how the game's files and coding work, provide the code to make the stealth component not exclusive? Can you go ahead and make that happen? Thanks! [/e sarcasm].
Perhaps let the folks who create things in this awesome community speak for themselves - Page 3, Focused Feedback: Travel Power Updates (Build 1) thread in Homecoming Feedback: