I'd personally recommend that if we have to continue keeping EX trials in fights that when unlocking EX's there is a disclaimer for new people/those using DF.

I have to agree that using the duty finder prompt is a misleading thing, especially as party finder is the norm for many of these fights. It could even be something in line with the world of XIV stating "Use party finder to make a party with a group of adventurers and fight!" instead of just simply using duty finder.

Many new players don't know party finder is a thing/ never consider using it, and do queue for content through DF no matter what it is. I'm sure for JP this is a normal practice but at least on NA PF is the norm since it lets you know what you're getting into.

I'm a person who will help EX trials when I can but many inexperienced people wind up wasting their time in DF for the group to disband since someone is not pulling their weight. There are bad mentors, who wear the burger king crown for points, but there are just as many good ones who want to help, but we can't play others charactes for them, so explaining and hoping for the best is all we can do.