They don't qualify because they aren't subsidiary, less advantageous ways to the same end - they are alternates that are as good as or better than the guy whose schticks stealthy lockpicking, hiding and climbing are supposed to be. As @
Mustrum_Ridcully suggests, you could make them sorse than the Rogue's skills; alternately you could give them a real price or significant disadvantage (like noise for the Knock, concentration for the Invisibility - so that you can't keep Silence up as well, for example - and reduced walking speed for Spider Climb, just as a few ideas thrown out at random).
For all classes, if they have a way to do what other classes specialise in that is less advantageous than the way those classes do it - fine. But if some classes have ways to achieve every other classes speciality with no discernible downside at a rate of one a day - not fine. A party composed entirely of one class should
never be the "optimum pick", at any level.