Yeah. Pre-nerf, the regular FL raids were definitely not easy for PUGs. Hell, they weren't even easy for your average guild.
The LFR fights will be such a cake-walk you'll probably get bored. Plus, 25-mans allow for so much more fuck-ups than 10-mans, even more so when the fights are easy and you can carry idiots.
They will probably be akin to how the T11 raids are right now. They are so nerfed you can screw up mechanics and not have anyone die.