For folks claiming that syncing Garuda HM will mean there will be a lot less people running it - this is probably true. However, currently there are WAY more people running Garuda than there, by all rights, should be, due to her being an easy source of lights/pulses. Add a sync to reinforce mechanics, and Garuda won't suddenly be something no one does; rather it will return to being on-par with Ifrit and Titan HM in the number of folks signing on. That's not so terrible.

Whether it's better for a newbie to be carried past once-difficult content with ease so they can get on to more current content, or whether it's better for the newbie to experience the fights "as they were meant to be experienced" really depends on the newbie, I think.

Personally, I think the sync is a good idea, because I found learning Garuda HM to be fun, and want others to be able to experience that fun without being forced to jump through hoops (acquire mid-level gear, party-finder a like-minded group ALSO with mid-level gear, etc). That's just me, though; others might have the opinion that obsolete content is obsolete, and it's better for newbies to push past that crap asap; it was fun once, but those days are past - on to new fun!