This post will probably fall on deaf ears. Not to be mean or argumentative here, but I think your post is made largely out of ignorance. I'll try to explain this objectively but it'll come off pretty long.
The vast majority of forum goers that choose to say stats don't work make the assumption that stats are % based, meaning if you go from 500 to 550 attack, you've just increased your DPS output by 10% because your stat increased by 10%. They don't realize that there are ways to manipulate internal formulas such that going from 500 to 550 attack can drastically improve your damage output.
The issue has to do with the concept of percentage gains versus linear gains. A large percentage of these posts are made with the notion that stat formulas must be percentage gain (they were overwhelmingly this way in XI), but in fact, having tested just about every stat since 1.20 came out, our LS pretty much has found that everything's a linear increase. This means that adding 50 attack is the same if your attack originally was 200 or 500. You still get at the same 'raw gain'. Again, this is quite different from XI's PDIF * base modfier attack formula most people seem used to here.
To tackle the very popular argument that stats must be useless because of "naked" primal runs, I'll start with Moogle. Your DD are going in naked with the sole exception of their weapon. They then make the claim that their gear doesn't matter, not realizing that it's not that gear doesn't matter, but instead that there is simply an imbalance with attack stat modifiers. Stats are incredibly useful - in fact one of them is SO useful that it completely trumps the usefulness of any other attack stat. This stat is Base Damage of the weapon. When you go in naked with an Ifrit bow, the vast majority of your attack is maintained on the weapon. So losing the remaining stats on your gear doesn't make 'naked DD' impractical. If we want to make an imbalance argument, it should be how base damage matters too much, not that stats in general are meaningless. Tell a group to clear moogle with 6 ARCs using weather shortbows, but they can wear any armor they want. They won't win.
Ifrit is a slightly different argument because the popular DD is THM. Magic DD spells have a high base damage inherently built it so it doesn't suffer the same imbalance as melee attack formulas do. Even though you'll get horribly resisted naked, you can probably clear Ifrit rather easily still using naked THMs in weather scepters. The best argument I can make here is that Ifrit is largely about fire damage (for which there is very little gear that affects the damage you take from elements right now) and damage mitigation through dodging TP attacks. It's a fight about evasion, not a 'gear check' fight. You can argue the merits of this from a battle perspective, but I think it's unfair to completely assess the nature of stats in XIV on that 1 fight. I actually don't know how much damage a GLA with a base 54 DEF takes on swipes, but would be interesting to know.
I'm far from a XIV white knight. I just feel the need to actually know what's going on before I critique something. Again, having seen the testing for just about every stat over the past 2 months, I actually find the stat formulas in this patch quite elegant. Very few were overpowered or "broken" (couple are like base damage in my opinion). The community mods like Bay and Ruk likely don't play XIV to the extent that they know the formulas (nor would 1 expect them to), so I really hope that when they rely posts like this, the devs hold off until the community has a more accurate general understanding of things.
All this being said, it's a community forum and everyone's got a right to their opinion. So if you still feel the need to argue for sweeping changes, have at it. Cheers.