It works. Iv done it. Itll veg and follow photoperiod.
Iv done it to plants while thy were flowering as well. The flower died back and vegetative growth replaced it. I used critical auto moat recently with success. And this morning i took a cutting from a humboldt sour diesel from it's lowest branch. The plant is almost ready to harvest otherwise. I cut the flower on the branch.
Give it a shot. Dont worry about the naysayers. They may not have tried it. And if they did, idk what to say.