Currently, 8 mans like ifrit, titan, garuda, extremely difficult bosses, especially the latter, that require competent players, a good strategy, good understanding of your class, patience, and a good party set up(pretty much need SMN/BLM for ifrit, BRD is basically required, WHM is very much needed) can be done using duty finder. Sure, you don't need the perfect party set up like I mentioned if you've got some gear, but when starting out, you're doing ifrit because you need his weapon, which is why you're doing it, and generally you're doing him because you're on his tier of gear right now.
The ability to duty finder it means less people shouting for parties, less people joinng FC's, less people looking for other players on their server to run it, and less statics being formed. Most people will just queue up, roll the dice, and pray for the best instead of trying to make a group on their own server. Because of this, it's even harder for people who WANT to make a competent group/static to do these fights even harder, because there's no LFG channel and there's much less people interested when they can queue up + afk + pray.
You will rarely succeed in duty finder for titan, almost NEVER for garuda, and even Ifrit is a toss up.
Can 8 mans please be removed from the duty finder? I would love to find more players on my own server to run this with, and meet new friends, but with the easability to just queue up and afk/craft/etc, there's a much smaller pool of players to pick from. It's harder to make a FC, harder to make a static, and harder to make friends.
I made a LFG LS on my server, and sometimes advertise it in /shout to get more members, since there is no LFG channel in the game, this will have to do. When I find members for ifrit and 8 mans, I have to teleport(This costs me a lot of gil..) to every high level zone and major city and /shout, hoping to find members.