The Strawman Fallacy
"You are against the cash shop because you expect to be handed all content for free."
The Ad Hominem Fallacy
"If you can't afford a few bucks to spend on a minion, you probably shouldn't be playing an MMO in the first place. Instead of being so cheap, why don't you go get a second job and stop wasting your life in a game."
The Black or White Fallacy
"Look, the subscription model just isn't viable anymore. It's either they install a cash shop, or the company goes bankrupt."
The "No true scotsman" Fallacy
"LOL @ quitting the game over cash shop. If this makes you quit then clearly you never liked this game in the first place and are not a true FF fan."
The Authority Fallacy
"Yoshi-P said the cash shop will be vanity-only! Yoshi-P said he will shut down the servers and kill this game before it ever goes Free-to-Play!!"
