You can't wreck one without the other. If you go pet, you go Haste, people just aren't going to reforge/regem per-encounter over a talent.
They balance the class around having pets, the problems arose because of the absence of pets broke the scaling, and the only way to fix it would be to give all specs Demo's Mastery, and that would potentially break every other spell we use. Okay, they didn't anticipate everyone switching to Sac, which is their own fault for underestimating how fickle players are - something they've done time and again - but they know full well the overbearing reason people use Sac is purely because it sims the best in high end gear. "Preference" is often stated as a reason by players, but they just regard that as "Mechanar syndrome", when that preference is driven by efficiency, and following the top simming/performing spec is pretty damn efficient.I realize not all the numbers are in, it's just GCs comment that Gosac should be rare irks me.
I honestly wonder how many players complaining about Sac being nerfed are genuinely going to "miss" the playstyle of 'same rotation without concern for pet control', how many genuinely give a shit whether they have a pet or not, and how many are just purely concerned about the fact they're getting nerfed.