Yeah, I strongly disagree with this. Everyone can STILL see this content. The difference? They have to wait a tier or two. There was never a shortage of PuGs in original Rift.
The content is accessible once they nerf it and the next tier rolls on - then people start PuGging. Yes, in SL it is hard to get a PuG at moment, but as soon as the next tier rolls around, it will become commonplace again. There is no need for LFR in my opinion. This from someone who isn't in the guild's main raid team. I will gladly experience it second-time around, one tier behind. Forcing people into guilds to do raids is a good thing, in my opinion as it stimulates server community.