This is another thing I wish people would stop Casually recommending.
What one person needs/prefers has nothing to do with another. For many years people got along just fine with high PG e-liquids.(80/20 - 70/30)
High VG, 50/50 -60/40 is a balance that smooths and increases Vapor production.
Max VG is for those with True PG sensitivity and for Big Vapor.
Both require adding more flavoring to overcome muting.
Almost every ex- smoker I have converted Coughed when switching, regardless of pg/vg blend. Seems to be the nature of adapting.
Many now THINK they need MAX VG due to others recommending it during their transition.
Most People are not allergic to PG - No Breaking out, Hives or throats closing off.
* If it becomes an Aerosol it cools and condenses back to a liquid - Thicker may not be better *
Note: Sorry about the rant, Casual recommendations happen all to frequently.