This has been happening for a very long time, in almost every MMO. It definitely started early on in the game's life. I don't see much of a problem with it, especially since last time I was on FFXI (late last year), there weren't that many low-level parties around (hell I was seeking on Bard at level 25 for 3 or so hours!).

And honestly, if it really bothers you, just leave the party and explain why. No need to bother with it if it really hinders your game play.