Sure, when they have good Mosfet(s) and the switching power is very low.
And, years ago, an asian specialist in this forum found the data sheet of the Atto switch:
the livetime was over within a year if used in the Atto.
This thread gives me the feeling,
companies want to build cheaper and cheaper.
And iggibuh payed 66$, same price for 3 mech mods.

yeah, you can switch out those switches

I think C4 explained that very good.
E.g. he wrote in post #6:
Yep, there was a time when the casual mod purchase didn't require as much research! Now it seems every company building 18650 mods feels the need to not include a boost circuit - which is nonsense, especially considering cost vs. consumer desires.
I feel EVERY regulated mod should at least have 5 or 6 volts usable output, whether it gets used or not.

That perhaps means, companies try to hold the power stress low,
to use cheaper parts in the mod.
And/or the companies say: starters use this mod, better no booster.

But 66$ is a lot of money, and in FTs data sheet is nothing written about the zero booster,
Edit: only "Operating Voltage: 3.2-4.2V", do they mean the battery voltage or the output voltage?
Perhaps FT should write: Output Voltage.
Time to think about cheaper solutions with the same or better vaping result as AIOs.

Which goes to show just how piss-poor some YooToob reviews have now become, with so-called 'Reviewers' banging out videos a day or two after receiving it in the post. Hardly surprising then that details like this are missed.

The worst part imo is the guy putting his name on that design saying they spend about 2 years in dev dint make sure it could do a decent amount of voltage output. For someone thats been in the game this long its pure stupidity/greed from Tony B