Okay, sounds like something to keep in mind.
Honestly I just get the idea that the series as a whole is too much for some people who aren't used to spending much of their resources to handle. I don't just mean the time it takes to learn or play the game, I mean like "Mind body and soul" levels of resources.
Trying to keep up with the story of all these characters, individual things about them and how they relate to the plot, what is going on in these wars and such, who is the bad guy (cause you know, plot twist, fake villains etc.) I don't need a plot more complicated than kingdom hearts.
Tactical battles about predictions and anticipation mixed with long preparation times to setup the characters and all that other stuff cause each one has different weapons, gear, and stuff to equip for their different classes. Then having to execute various plans that can and will change on the fly to adapt to each situation. If i'm going to put most of my brain power into this, i don't need a complex story that requires more brain power to understand. Pick one complicated thing at a time.
I have played simpler rpg games. Shining force for example is easy to understand from the story to the gameplay, as well as non tactical rpg like dragon quest that also have easy to follow stories and gameplay. I assume the reason for over reliance on the multitude of "variety" fire emblem has is just adding depth or longevity to the games replay value.
Of course if anyone here is free to debunk all my statements so there is better understanding about this, I appreciate it. I feel better knowing that people are willing to make curious observers who are interested but hesitant to try, feel more welcomed into understanding things.