I think this is a joke, and a funny one.

@Background Pony #D6B3  
Amazing that you choose to interpret the three times outside influences are in play as her true self. The plot, and by extension the Element of Kindness, disagree with your non-canon interpretation.
 
So no, Fluttershy would never say this. Your headcanon doesn’t justify it. And I am done with this utterly nonsense conversation.

@Tavi959  
I strongly disagree with that interpretation of those episodes. She’s a bitch in all of them and show’s the world how mean she is deep inside.

@Background Pony #D6B3  
Outside. Influences. And The Mean Six wasn’t even her, it was a fake. Return of Harmony was Discord. Putting Your Hoof Down was Iron Will.
 
You’re terribly blind if that’s your justification for this.

@Zaknel  
Yep. He’s the upoloader too.

Wow, I didn’t even realize that that was OP. I guess, based on that response, this might be a quack. My mistake.

@Zaknel  
Thank you so much for stopping me to begun to say nasty things to OP. Have nice day.

Two things:
 

@Background Pony #D6B3  
Thank you OP you can now go home. (Sarcasm)

@Tavi959  
How can you say Fluttershy would never say this? Haven’t you seen The Return of Harmony, Putting Your Hoof Down, and The Mean Six?! Fluttershy is totally mean to everyone and deserves to lose all her friends over this abhorrent behavior!!!! FUCK HER!!!!!!

@Tavi959  
Okay. You really have a point. Im sorry.

@Background Pony #40F4  
Sure. Blame the writers for your unwillingness to acknowledge a character’s behavior because she’s your waifu.
 
News flash, 40F4, I like Rainbow a lot more than Fluttershy. Rainbow is a jerk, she’s ALWAYS been a jerk. She does have a heart of gold, but claiming she’s nice when her ego could lift Cloudsdale to the moon is completely ignoring her character. You don’t like her as much as you think you do if you choose to pretend she’s perfect.
 
Heck, I waifu Starlight Glimmer and I readily acknowledge that she’s far from the nicest pony. But Fluttershy is the Element of Kindness and is by default the single nicest character because of that.
 
Don’t blame the writers for your fan goggles.

@Tavi959  
I said don’t blame her. Blame the writers instead. Dash is nice mare. We get it. You like Fluttershy more.

@Background Pony #40F4  
Rainbow is also an asshole, something Fluttershy doesn’t know how to be unless influenced by an outside source.

@Tavi959  
Rainbow is cute. Don’t blame her.

@Background Pony #40F4  
Rainbow Dash, maybe. But not Fluttershy.

@Tavi959  
Are you sure?

Things Fluttershy Would Never Say #5178.

Don’t be a dick, Fluttershy

Storm guard : This is why, I’m on the storm king side and terrorizing town and city for him.

This is just mean tbh