Full girdle

I can understand someone wanting to look good in a dinner dress or even in casual wear. But I wonder sometimes if buying a full girdle, in an attempt to look thinner and more shapely, is defeating the purpose. Is there an issue where the girdle take the place of a healthy and balanced lifestyle? I mean obviously, it’s easy to just slip on a girdle and look a few pounds lighter. But at some point, does it become a crutch?
Full girdle:

Full girdle pictured: Faja Shapewear Full Body Girdle Cincher, Adjustable Straps