So do I.
I just don't LPM them
There's a difference between testing and LPM'ing. LPM'ing is a subset of testing. I test every Mosquito I sell, twice. Once after construction, and once immediately before shipping. I don't sell the Mosquitoes as "X mW", I sell them with their current listed. Even in my descriptions I give a very wide range that starts with a conservatively low estimate.
My reason is logistics.
I don't want to categorize a million different modules, and have to keep track of which goes with which sale. I
HAVE a spec that I ensure every module I sell lives up to. That spec is 1,667 mA of current flowing to the diode.
Now truth be told, I do grab my LPM and test the occasional module if I power it up during testing and have some question about the output. Sometimes when I build during a lot of natural sunlight, the first module I test the output of always throws off my senses and seems dim (because of the natural lighting).
But my point (which you've missed), is that
if you don't LPM every laser product you're selling (which I effectively don't with the Mosquitoes),
then you shouldn't make a power claim to begin with. If you DO make a power claim, you need to make it so conservative that you know your buyer will get something above the spec, always. IE, in my case, I think I describe the Mosquitoes on eBay as falling in a power range that starts at a low end of 1.2W output. For a diode running at 1.7A, that's absolutely safe and honest.