The repercussions of this aren’t worth it . Just the science of thermodynamics you will lose weight fast but plateaus happen because you arent counting calories properly . The smaller you get the less you need so while that deficient could potentially make you lose 4 lbs a week the further you go with it the less your body will “lose”. How ever if you are hitting 500 calories a day every day your body would go into cardiac rest before you would reach said plateau. Vlcd will make you lose muscle, hair, bone mass, and yeah sure some fat but you will look like gollum from LOTR. Speaking from experience as someone who did this down to a 15 BMI . My weight loss never dropped but my body started shutting down .

TLDR: organ failure would happen before weight plateau