Chanel, it's really just about running your business with "Your" customers in mind.
I owned a tech company for 15 years during the Internet start up through last year, and it always irked me to see web sites not optimized with their customer's best interest in mind.
Nobody is questioning that Ahlusion make's great juice. BUT, if you accidentally mislead customers to VG/PG ratio's that are not the best ratio to make the flavor shine, then you are just hurting yourself. For every one customer that figures out that the default VG/PG ratio is not what Ahlusion recommends, there are probably 9 that just say to themself, "This juice sucks, I won't be ordering here again"..
We saw the same thing with FSV. Many were ordering 100% VG, and wondered what all the rave was about that vendor, as at 100% VG the juice lacked flavor.
So, it's not a different strokes for different folks. It's running your business to optimize the customer experience. It's really not that difficult.