I very strongly disagree with this. FFIV and VI were never hard, for one thing. They may be challenging to new RPG players, but they were never challenging for me. What was challenging for me was something like the 7th Saga (which I replayed this year). What's hard for me is Dragon Quest (which I have replayed for me five or six times). The RPGs that were actually hard are still actually hard. They aren't "hard" if you grind for long enough, of course (except for 7th Saga), but they are much harder than anything from the Easy Era, which started with Final Fantasy 4 in the US.