On one side I can understand that you and your friends want to do the raids and other high level content together, but on the other side you are playing a FF game. ^^; If they are already complaining that its too much after only two months of this game than I am not sure if this is truly the game for them. I mean its completely okay if they or others don't like the story and skip most of it but I really hope that SE keeps one of their advantages which is (imo) their story and not make all those shortcuts. (All the work that they have to put into that X_X and how would most of the story even make any sense if they don't need 3.0 story or are able to skip most of it). And in terms of a MMO three months is really short so at least for me that would be kinda fast to reach endgame.
Like some said these quests were included into this game over years, so maybe they have to accept that they cant be finished in one month. Leveling up and going through the story was the best time in the game for me. You always learned new things (this would be different if you had to watch it with your alt character) and you did not have that much repetition. Now most of the time its nothing more than farming the same dungeons again and again to get better equipment and wait for the next patch..rinse and repeat. It still can be fun, even more if you have nice people with you but it can also be quite boring at a time.
I really hope that your friends will stay with this game even after they reach endgame but I really fear that it may get too boring for them too fast. I will always remember some of our former guild mates that power leveled through the story to get to the endgame content and to get their equipment but after they geared their class a new patch came out, with new gear and new stones to farm and they were really shocked about it. All I thought was "Welcome to the FF14 endcontent". And who knows, maybe if they reach high level they will notice that they cant do raids? Or maybe you will not find enough other people to raid with or its not fun for them?
So I am sorry but sadly I don't feel this way.