What source are you looking at? Because the Massive 4.x BRD guide doesn’t use stat weights, and that’s the go-to source for most BRDs that want to optimize (along with Miyuri’s FAQs, and, last I checked, she didn’t list any stat weights in there either). I mean, the 2.40 GCD build may meld Skill Speed, but from the talk I’ve heard from other BRDs, no one ever uses it because the gains are higher when you go full DEX or full Crit; which one BRDs choose between those are strictly down to preference. I’ve been told by a couple theorycrafters that stat weights aren’t officially used anymore due to how easily they can be skewed.
If you look at any Stormblood BRD guide, they advocate for melding as much Critical Hit as you can, followed by Direct Hit. Skill Speed is not a good stat on BRD given all the double weaving you do at optimal levels; the gains it gives your DoTs are minuscule compared to the gains you get from increased Crit (more crit = more procs = more damage). Combined with high ping, you will clip when you double-weave (which there is a lot of in both your opener and your general rotation)—and 4-stack Army’s Paeon gives you +16% haste, so then you’re really clipping everywhere (it’s advised to single-weave only in AP for that reason). The highest Skill Speed rating BRDs have with current BiS is 983 (High Crit build or 2x Tomestone Ring build), and they don’t exactly love it. They only take it because they gain almost 200 extra crit by taking 2 Tomestone rings (1 i370, and 1 i360).
Coming from a BiS BRD, you don’t meld Skill Speed on a BRD. You meld Critical Hit, and then where you can’t meld Crit, Direct Hit. If you can’t meld Direct Hit on to something, then Determination. But never Skill Speed.
EDIT: If you’re referring to this post, 99.9% certain that was a joke post, so you probably shouldn’t go by it. Considering the “stat weights” were from auto-attack dummy parses.