why make things so complicated

vaping should be a nice easy thing.
It is easy. Unfortunately most US citizens never learned basic electrical theory in physics; ohm's law is the most basic electrical treory you can learn, and a mech is literally the example circuit diagram everyone learns first... a power source, a light bulb, and a switch.
If you m2l then a above ohm 1.0 and above is what you need
If you lung inhale then below ohm (sub ohm) is your answer .09 and below
What tank you using?
As others have mentioned, this had better be a typo. This isn't the sort of thread to be throwing this sort of misinformation.
In response to the OP's question:
The ohm rating of your coil matters for two reasons:
On a mech it determines the overall wattage of your vape.
With a regulated device it isn't as important as long as you are in the working resistance range for your mod. As an example, the dc-dc converter circuits in vw devices will have a max operating voltage as well as max operating watts. If you have an atomizer built to the very top of your mods resistance range you might run out of volts before your mods total watts possible output has been achieved.
Having a lower resistance coil setup doesn't always mean faster rampup and cooldown. If you are building on a mech and using a lower gauge dual coil your overall coil mass can easily end up very high for the overall watts being generated (I.e. something like a 20guage kanthal dual coil at .3 ohms; sure you are pretty strongly in subohm territory, but the coil is going to react very slowly due to the mass).
The most important things to consider are
A: final wattage
B: the overall mass of your coil
These two factors combined = heat flux, which is probably the most important value to consider when you are building a coil.