The whole rose tinted glasses thing is a misnomer and anyone stating that just has a weak platform of discussion.

Putting that aside, I can't see why a "Civil" discussion would lead to being blackballed by a linkshell. Obviously the same way you like FFXI for it's content style many people actually do enjoy FFXIV just as much and it's not really fun to hang around someone who is always being a downer on something they enjoy. Hell I'm pretty vocal about my issues with the game but I'm also able to share in the experiences that I do enjoy with the current game.

waxing poetic about FFXI is great sometimes, but if your enjoying the company you keep you need to keep their opinions in mind as well when discussing stuff. On the flipside if people are being unseasonable about your right to have an opinion it's not really a group you should be hanging out with anyways. You really shouldn't force yourself to be silent, but you should also be understanding the opinions of others at the same time.