I haven't seen him give me any advice about how to steep. When he does, I'll take his advice seriously.
Advice on how to steep isn't freely available on the internet?
He gave you advice that says look for recommended steep time from vendors. If they don't recommend steep time, don't
buy from them,
buy somewhere that does. That's sound advice from where I'm sitting.
In the UK we have a vendor called Joose
juice who produce really good liquids but they absolutely have to be steeped for at least a week as they make them fresh. I notice the difference big time when I steep their stuff.
When I don't want to steep I buy Dekang and Hansen stuff which steeps on a boat. This isn't complicated, really it isn't.
There's always the option to email or phone vendors and tell them you are interested in their juices and would like to know if they are ready to vape when you receive them. They won't ignore you, they'll answer.