Anecdotally, the dose required to maintain a stable weight seems to be lower than the dose required to lose weight. Most people tend to regain some weight when going cold turkey.
The safety profile of the drugs with diabetics, and the health benefits that come from the associated weight loss may make permanent use a net benefit for most people. There appears to be little, if any, "course correction" effect from taking it for short periods of time.
It depends how you define "short period of time". When I started, I lost 40kg in a matter of 5 months. Is that short? If you develop a tolerance to the product, then it doesn't protect you long term from gaining back weight, combined with you losing the option to do a rapid descent.
I am not saying that those variations are great from a health point of view, but they are certainly not as bad as staying obese.
Yeah that's quite short. Healthy weight loss is typically in the ~.5-1 kg/week, while this is an extended period at 2-4x that rate. The effect that will have will largely depend on what your starting weight is, but unless you're starting significantly north of 140kg, it seems like the amount of muscle (and maybe bone density?) loss would be pretty severe.
The safety profile of the drugs with diabetics, and the health benefits that come from the associated weight loss may make permanent use a net benefit for most people. There appears to be little, if any, "course correction" effect from taking it for short periods of time.