It’s on the World Health Organization list of essential medicines. 150M people rely on it to manage their diabetes. It’s been prescribed for 65 years.

Forgive me if I’m highly sceptical of your assertion that going for a walk after meals is an alternative to Metformin.

In 65 years Ozempic will have been in use for 65+ years to help people lose weight, but that won’t make it untrue that going for a walk helps you lose weight.