Some people say that boost doesn't matter. But it does. Let's say you like to vape at 20 Watts on your favorite 1.2 ohm factory coil head. So you buy a single battery mod with no boost cuz it's nice and shiny but you had no clue about boost, you just want nice and shiny 2022 mod.
You're SOL cuz u need that mod to hit 4.9 volts to achieve that 20W on 1.2 ohms. You're only going to get a max of 13 watts on a fresh battery (and it will get weaker as the battery loses charge). Now you have to buy different coils. Problem, you bought 200 1.2 ohm coils because you knew 6 months from now they would be hard to find
I'm 100% with on this. I think the idea of having a boost circuit is probably the biggest reason to switch over from a mech mod other than for the safety features. Even if your build only needs 3.7V or 4V - your battery is going to eventually drain below that Voltage (if it doesn't already with battery sag), and from that point until the battery dies, there will be a huge decline in performance. To the point where there isn't enough oomph for the battery to even fire the coil hot enough to vape. Why are people saying this is kosher? This is my theory.
As a general rule, people are not interested in vaping enough to do the research. Never hearing about a boost circuit would lead one to believe that it doesn't exist. So any mod in 2022 is going to perform similarly, right?
"My VooPoo X Plus Pro Uber Ultra Pinnacle Elite TPP PnP-X pod mod fires my 0.2 Ohm coil just fine. It should work just fine for you too!" Absolutely zero understanding of how coil resistance effects Volts, Amps, or Wattage, and absolutely no wish to learn about it. But it works for them, so it should be perfect for you!
It's annoying, because it's like trying to wade upstream through rapids. For the people that say they don't need it, they either exclusively vape at 0.2 Ohms (or around there), or they don't care that they have to change their batteries out with 60% battery life left. That may be great for them, but that annoys the bejesus out of me. For anyone that wants as "maintenance free" of an experience as possible, not having a boosted circuit is just one more annoying headache to have to deal with. And it's not like you have to pay an arm and a leg to get it - just some research and understanding.
A big one that's been annoying me lately is Vandy Vape's new Pulse AIO - it doesn't have a boost circuit. I'm interested to see how many DL vs. MTL vapers purchased this product for their intended vape style. AIO's typically cater to the MTL vaper, so why would you not boost this circuit? Absolute idiocy. But again, it doesn't matter to the person that doesn't know it exists.