Edited for typos.
I think I better clarify what I was saying a bit..
Nearly any liquid will leech(read as extract) the substance of solid into itself with enough time. I believe the reason this method works in such a short amount of time is that alcohol is used. If you followed the same process with water your resulting flavor would be much weaker. This method is using two forces at work, pressure and a solvent, to achieve an acceptable level of flavor for a drink. Depending on what you would be using, I don't believe you would get a result concentrated enough for our purposes. This may work better if you added some time to process, days or weeks and used some ethanol(read: drinking alcohol) as a medium. You may want to give the ethanol time to evaporate off, either lightly heating the solution and stirring for sometime or storing in a vented container and mixing it couple times a day. Applying heat to ethanol, is dangerous so the latter maybe a better idea for anyone uncomfortable with the idea.
Keep in mind for the example I am about to use, plenty of people will be reading this and sooner or later someone will decide to try it. Say a thousand people read this and eventual try it, is everyone of them going to put the care and forethought into the what they are doing? That is viewpoint I am speaking from.
As far as extracting things you may not want to inhale, I will use the example of apples. If I ran out and grabbed a bag of apples at the store, chopped them up, made extractions out of them. It turns out great and continue using my apple extraction to flavor my juices without thinking twice that I didn't know the apples were treated with pesticides and then waxed. I don't know if washing them removed the pesticides from under the wax and I don't know what kind of wax was used nor what may be in the wax. Now my resulting extraction process has taken not only the flavor from the apple and concentrated it but everything else in and on the apple as well.
I understand that everything used on the apple, in the concentrations used and the intended method of consumption, were approved by the FDA for use in food. However, the FDA did not approve everything on the apple to be concentrated and inhaled. Example: nicotine, perfectly fine at 24mg/ml to be vaporized and inhaled, certainly doesn't mean 100mg/ml is also safe. Frankly speaking however, you shouldn't take anything the FDA concludes as accurate.
Eating and inhaling are two very different processes that in my short time here I have noticed many people don't acknowledge the difference. Your stomach and intestines provide quite a bit of filtering and protection from chemicals, bacteria and virii. Your lungs do not. The manufacturing of medicines to be taken orally is a very different process than those to be inhaled which resembles the manufacturing of parenteral drugs.
There is far too much to consider let alone the time and the effort involved, this is why my co-worker and I decided it wasn't work the risk to us. I also wonder how the resulting sugar concentrations would perform on an atty, depending on your setup and vape style you could just be clogging up atomizers all day while you inhale burning sugar. I hate to poo poo on the idea as I'm sure there are many great, cheap ways of making great flavors in a home kitchen, I just don't see most people putting the time and effort in to researching a safe way of doing so.