In essence, yes. This is TBC, not something else. If you want drastic changes, might as well call it something. Might as well call it easy-mode classic if CD's are reset after each attempt/kill. CD reset on attempts I might be persuaded to support, kills never. This would provide the QoL with reset if you're bad at the game. But you'd need to choose which CD's you as a raid want to use. This way it's not easy-mode whenever. Even then, only some bosses should offer CD reset and certainly not last bosses. I opposed it from the start. Now that I had to think how/when/if it should be implemented, even if only after wipes, I find it appalling.
Most of those were implemented by Warmane. There were no questions or polls to query players if these should be implemented. Not saying that there should've been, just stating that these were thought out and implemented from the get-go. Would you prefer playing 2,5 years with no RDF, and 2 years without a dual spec being possible? Would you like to take the time and effort to level two Paladins, and professions for both, so that you can play Holy and Protection. You could always do the endless amount of talent change, not exactly something cheap if you have to do it on repeat.
Only thing that got polled was if some more or less random items should be released on phases where they actually matter bit more. No big game changing items on that list.
Onyxia got some QoL updates, doesn't mean it should get everything.
It does, and you don't seem to get it. With CD reset, every boss is effectively easier as you get to use big spells each fight instead of every other or even more rare occasion. Every boss Blood lust/Heroism, LoH, Rebirth, Reincarnation, to only name a few from a rather lengthy list, drastically changes boss difficulties. Onyxia is already post-nerf. How trivial you want the boss fights (the biggest think in progression) to be?