The problem with this is that you've taken a quote about class, and made it instead about time. It's pretty clear from the quote that Strange is the type of magic-user Moore is making Constantine a contrast too, yet by making this trope merely about modern-day setting Strange becomes an example. By the terms of what Moore is saying, you could have what he called a "Blue Collar Warlock" in your traditional fantasy setting just as well - the guy in D&D whose job it is to enchant all those +1 weapons; a hedgewitch just trying to protect her village and keep her head down... hell, whenever you get sufficient quantities of wizards you're going to get a hierarchy of 'em as well.
The problem with this is that you've taken a quote about class, and made it instead about time. It's pretty clear from the quote that Strange is the type of magic-user Moore is making Constantine a contrast too, yet by making this trope merely about modern-day setting Strange becomes an example. By the terms of what Moore is saying, you could have what he called a "Blue Collar Warlock" in your traditional fantasy setting just as well - the guy in D&D whose job it is to enchant all those +1 weapons; a hedgewitch just trying to protect her village and keep her head down... hell, whenever you get sufficient quantities of wizards you're going to get a hierarchy of 'em as well.