What makes RDM an easy DPS?

[Setesh45]

I don't mean to advocate red mage is the most galaxy brain thing out there, but pretending it's as simple as you do is a disservice to the effort behind the design and to players looking to pick it up.

I think the issue is that there's no class which is WAY easier or WAY harder than others. People say it's the easiest, but the difference between the hardest and the easiest class is not that big, for a casual player it can be nearly non-existent.
People expect their game to turn into an EASY mode with a specific class, but that's just not the case. You are always within the same difficulty level with just marginal differences which are highly subjective.