From what you’ve described you aren’t taking a “Gap”, you are taking a full time job (which you currently do not have).
I would not be concerned about it being looked down upon, but if you plan on transitioning back to professional work you should ask yourself if you should be going into education for just a year (when you’ve been in school recently) or if you should just move to professional work.
Either way - a gap year is when you decided you were just going to hang out in Thailand for 12 months because you had a trust fund after college. I would not view taking any job in any fashion in a negative light as long as you remain a skilled and capable hire after the fact.
It’s another story if you teach for 10 years and then want to get a professional job without knowing any of the latest tools, software, manufacturing techniques, etc.