So, here's my take on it.
Firstly, yes, that a perpetual harvest i can see as being advantageous. You can toss vegging auto's into 1 tent with the flowering auto's and just roll and roll. I get that, totally and i never thought of that before. Thanks to the person that explained that. The appeal of that i can see because there's no need for a veg space with a second tent/room light, fan, timer, humidifier, etc.
Thanks basically where my agreement ends.
The negative's are that you are running your light 24/7, which draws power 24/7 and burns your lights out faster leading to higher electricity cost and faster light degradation and light replacement.
Secondly, you have to continuously buy seeds from these god damn ripoff seed banks. These days you can pay a seed which is just them making money hand over fist at your expense. It's bullshit!
I buy 3 seeds from seed banks, or 5 packs. I sprout 1 seed and store the rest for future use. (I've sprouted 12 year old seeds in the past) In fact the Lemon Kush diary i have right now are clones from a seed i got as a freebee back in 2011 that i had in the fridge all these years.
The advantages of Photo period seeds, are many, and they are all cost saving advantages.
#1, buy your strain once. Grow it up as a mother, enjoy endless clones of your favorite strains. I keep 3 mother's. Lemon Kush, Oreoz, Biscotti Mintz. I don't need to whip out my credit card every few months! Seed breeders LOVE auto purchasers because it keeps them in the green, Literally. I can cut as many clones as I want for myself, or i can sell clones privately as a revenue stream. 👍
#2 Vegging mother's and clones and young rooted clones can all be achieved in a 3x3 tent with a 165w LED. Optic 2 Veg is what i use. Yes, you need to buy a few things, Tent, light, timer, extraction fan, oscillating fan, etc. But those are 1 time payments that will last you like 5 years, maybe more.
#3 My equipment has a rest period every day, which reduces the wear and tear and extends the life of my equipment. It also reduces my electrical costs. 👍
In my opinion, I can now see who Auto's are marketed to, and I mean no offence when i say this, but in my opinion they cater to the not so serious, novice half ass grower that isn't an enthusiast, but wants to grow their own smoke. Or the know nothing grower that's looking for a cheap easy way (or so they think) to grow their own without the big investment that a more seasoned enthusiast would drop.
I started growing when i was 14 years old in my dad's basement under a 4' Fluorescent light. By my mid 20's I was renting houses and running 13x1000w lights etc etc. This was all in Vancouver British Columbia back in the good old days (early 90's). What i'm getting at is that the lower mainland of british columbia is the same as seattle washington. By that i mean it rains a LOT. So to have weed outside that finishes in October, forget it. You'll be bud rotted right out of your hard work. And outdoor gorilla growing is hard work!
Auto's were not a thing back in those days, but if they were, it would have been awesome cuz you can finish before the rainy season! And that is what i believe Auto's are best suited for.
The other bonus is that they are mush harder to spot by air because of their small stature. I had cops fly 200ft over my parents house in a 1 prop by plane more than once. I remember running outside and yelling for my dad to hide the 5 and 6ft plants under the big cedar tree lol It's was scary, but fun and a rush! haha
So in closing, I think the seed banks and breeders love autoflowers because they are a sure income stream. I wouldn't be surprised to see photo's leave the market entirely in favor of auto' some day,😕, because Auto's keep customers coming back and back and back $$$$$$$