FCs usually use their game chat it's just that they use discord as well because some of their members are not logged into the game. They may be at work or playing other games. It's hard to ignore discord because it's just so good of an app that lacks the annoyance of signing up to websites all the time, provides immediate chat instead of a message board and lets you get notifications relating to the FC right away.

Some of them use the game chat more than others and whether they do depends on a lot of things, like how many overall active members the FC has, whether those FC members are the type to play all day or only when new content releases, whether they are the type of people that prefer voice and don't like to type much. All you can do really is keep trying new free companies until one suits you.

https://na.finalfantasyxiv.com/lodes...munity_finder/