u/GhostRider2708

The saying exists to manage expectations which is totally fair. It has also become a reflexive disclaimer that gets deployed every time someone has a result that sounds too good, as if people need to be reminded that their own experience might be illegitimate.

Some people's experience of this medication is genuinely close to transformative with modest lifestyle changes. Not because they're lazy or lucky but because the drug addressed a specific biological dysfunction that lifestyle changes couldn't touch. That is the medication working as intended. That is not a dirty secret requiring a disclaimer.