I figured someone would differ. It may have some tent-like qualities such as being made of poles and having a vinyl or plastic-like skin, but it has solid doors, a fitted kitchen, a bathroom and loo and thus is fully plumbed. It is a permanent structure. Not a tent (one of those things you can readily erect and take down as you move from location to location)
It is NOT, by any stretch of any imagination, anything ending in -amping.
Not having insulation does not disqualify it from being a cabin. I accept that the metal poles and plastic skin are unorthodox for a ‘cabin’ but I have no idea what else to call it once it has obviously disqualified itself from being a tent.