FFXIV is chock full of references to prior games in the series and this isn't anything new. If not direct references, then influenced by - in nearly every single aspect. I've had friends who've previously been disinterested in all of the referenced titles like FFXI and NieR but have gone and tried them out afterwards. Heck - FFXIV has been a form of gate-way into getting a lot of my friends into trying Japanese RPGs in general when in the past, they've turned their noses up.
As per the 'nostalgia loop', that's just the time we're living in. For the most part. You have to be more selective. We're all playing the fourteenth mainline title in a series that's been around since before a lot of us were even born. The loop doesn't begin with references, or these raids. That's for sure.