Outgoing parry/dodges not generating rage is a confirmed bug, however people keep comparing it to penix.
Penix had 3x armor values on bosses, and increased damage values(maybe 2x?) as well. So they had to tamper with rage generation in both incoming and outgoing damage in order to make warrior dps balanced.
https://youtu.be/Qm6tsnot_1c?t=33s
Vanilla video from a french server. As you can see the damage of melee twin is about 1-1.3k, while the uppercut(knockback) hits for about 1.6k on a full t2 tank. I can confirm this is about the same damage here on Kronos. (I got punted by 3.4 uppercut with dps gear and zerker stance)
The second I post, is the only moment you can see the rage gain from damage intake, because he will be ragecapped the rest of the fight since he doesnt use heroic strike
)
He takes 1.1k normal attack and 1.6k uppercut, this results in 30~ rage being generated. And this is actually a lucky moment, you wont be this lucky with rage generation if you have full tank gear on. 30 rage is basically a shield slam + revenge or sunder.
When your entire raid is dagger rogues with hemo/sub specs, or when your dps warriors are using full tier 2, %99 of dps are night elves or gnomes because its cool, ofc you wont feel the need to build threat efficiently. Who uses heroic strike anyway, it makes perfect sense to use shield block vs. caster twin and be amazing hardcore vanilla retail raider that made amazing achievements and cleared naxx!
Conclusion : Our knowledge about the metagame is so above those old players that everything they do looks wrong or just doesnt make any sense. It's unfair to compare our gameplay to them, so stop talking "retail blizzlike this retail blizzlike that" and pulling anecdotal evidence right out of your asses. Kronos rage gain is blizzlike in damage taken.