Edit: I'm replying to AC, not 404, who has taken a similar tack in a slightly different direction to me ;-)
That's not *strictly* true - I've run multiple >200w devices (at greater than 200w, too...) and providing the batteries are even reasonably good quality, it's not so much of an issue because:
A: You can't inhale at >150w for more than couple of seconds (you don't have the lung capacity to match the vapour production for that long, it's that simple)
B: Most reasonable quality batteries can easily sustain that level of current as a pulse (IE under a few seconds, not a few minutes) without breaking a sweat.
Now, it's *possible* to run at 200w for more than that, if you're not using the device (IE accidental pocket press) but what tends to happen is that within a few seconds, the coils heat up so much (due to lack of airflow and wicking) that they break, and break the circuit.
Regulated devices also tend to have thermal detection on the board - if you run the device too hot (the cells will tend to sink any heat into the device) it'll refuse to trigger, full stop, till it's cooled down internally or you swap to nice, fresh, cool cells.
Of course, none of this quite the same with mechanical mods, (which are literally a switch, a coil/wick and a cell or two) or unregulated box mods (as a mech, but with some MOSTFETS and simple discrete compenentry to manage series/parallel, perhaps a POT to dial up/down power - nothing fancier than that though), but those are really quite specialist, and most users of mechs tend to be pretty switched on to battery safety, not letting them short out, etc.
Of course, not all of them do, so a minority of reported e-cig incidents involve mechanical mods that have failed in some way (pocket press, far too low ohmage coils, etc) but the vast, vast majority of these incidents are quite literally.
Someone buys some cells,
Someone puts them in their pocket with small change and house keys
Nature takes it course and attempts to seriously re-educate you.
There's some more nuance and detail involved (as with all these things - hopefully I've included enough info to clear a few misconceptions up at least, the rest, feel free to have a bit of a deep dive yerself, you're on a tech site, you're perfectly capable!) but basically, regulated devices are very, very reliable if looked after. That's why incidents like this make the headlines; despite hundreds of millions of these devices being out there, and cells too, fires from them are very rare indeed because 99.99999% of users are aware of basic battery safety that their parents and primary school drilled into them at a young age...