I've been through that back in January 2014 on my first character. It clenched my heart then, and it clenches my heart now to read about others experiencing it.

As others have mentioned, this has been a common issue, which Square-Enix got word of, and they never did this again. Instead, they bunch cutscenes before and after dungeons after that. But even then, I'm sad that people are unwilling to wait on other players, because the Main Scenario roulette (which is what brings the majority of non-new players in those dungeons) have a reward for it, and that roulette's existence was precisely to help new players along in dungeons that people wouldn't need to run ever again otherwise. It's supposed to be for them to help new players and be patient with them, in exchange for the roulette's reward. But most of the time, they don't. Sometimes, they even have the gall to be rude to the new players, and that's where I draw the line between tolerating actions that shouldn't be (them not waiting on the new players in spite of the roulette's rewards they are seeking being the incentive to help in the proper manner), and being downright upset at those people.