Don't get fooled. This comes right out of the divide and conquer schoolbook. Doctors got a little too cosy with us pilots, for good reason, but against the management's interest. They now apply pressure on the meds pretexting GCAA requirements. The latter couldn't care less, BMI or fatigue, they simply sit,wait and got the order from the southern cousin not to interfere with EK ops, to make sure the profit continues -> it's their only insurance to get the security subsidy back.
Have you noticed the subtle connection of BMI with sleep/fatigue? EK wants to make up an underlying connection of fatigue to the overly fat pilots, as to escape of their own responsibility.
The doctors are taken as hostages, the pilots are made scapegoats for the inhumane rostering and to ensure operations and profits under these conditions.
If you are harassed by any silly BMI or fatigue issue, just do not go to the clinic or to specialists on your days off. Schedule that crap on a afternoon before any subcontinental torture flight and cancel it subsequently. If you are deemed a risk, take the opportunity for rest and have yourself deemed unfit for flight, insist on being either considered fit for duty with NO harassing test attached, or have yourself marked unfit/ sick and go for the tests.
That will then harm operations and bring the inquisitors back to reason. But don't take it out on the doctors, they are under similar stupid profit pressure.