Job titles should be clear. Having a role with Engineer in the name, in the engineering department makes sense. People can understand what an engineer does on a space station almost instantly, Due to influences from other games, other science fiction media, etc.
Maintenance technician doesn't lend itself to the same image, it's a vague title that has for years just meant a more unreliable engineer of some kind. Should they know how to turn on the engine? Should they not? Who knows. Its only uses being perhaps as a stepping stone between apprentice and a full on engineer, or perhaps for players who want to play to the archetype of a less educated engineer ,with less responsibilities.
Pointing at real-life examples I find irrelevant, we're neither a milsim-esque server, and we're not all in the know how of how engineers operate in real-life either and we shouldn't be expected to.
Tldr: Big -1.