Since he was pointing at me when he said it
the perpetual thing is not doing a "grow", harvesting, then doing another grow. I basically have a crop rotation. 2 separate rooms for flowering, but my goal is to get 1-2 females per run. One room (small tent) is just for seedlings and young plants. after a month they go into one of the other rooms to flower and I start more.
But I am not going for massive quantities. I only drop one or two fem seeds, knowing that they will be female. With regular seeds I drop 5-6 seeds looking for that same one or two females. Since I don't veg long I don't get ginormous "Tree of life" plants that fill a room. I keep them to about 4 tops, and prune away lower shoots to make those tops bigger.
Vegging about one month from seed for my 'rotation has produced 2-4oz plants. A few have been huge, some less than stellar, but harvesting a few ounces every month or so was easier to do with small rooms, than trying to harvest enough in one grow to last until the next grow gets harvested. It also allows room for error. If a plant has issues I'll drop an extra seed next month to fill the gap. If you have issues and it's your only plant and you NEED that harvest, it gets stressful.