The Rogue's iconic features are clearly defined and allowed to be pursued fully via their skills. Stealth, lockpicking, and trap disarming have clear rules and don't need magic to be done.
The whole reason why the first D&D rangers had magic is because the community as a whole wouldn't let you heal, cure, talk to animals, create traps, alarm a campsite, call beasts, or even do detectivework by rolling 18 in Nature or Survival. but the community will allow all that be low level magic. So why wouldn't the ranger snag this low level magic?