They treat savage now differently compared to ARR or heavensward raids. They can turn the difficulty down, just because ultimate exists, that's their excuse basically. And people are happy customer if they can clear fast.
Though, if it gets too easy, the same will happen like with PvP, where you lose the "good" playerbase and replace them with mostly casual players. There is nothing entertaining when everyone performs the same, if you look at it from the outside, and when the skill ceiling is too low. Thats why Idk if it's worth to have a worldfirst race for savage tbh, they are all so close together at the top.
To me the most fun raid experience I had was probably Baldesion Arsenal, if they could create content like that for 8,16 or 24man grps and make it difficult, I would prefer that over every trialboss, which we have in savage raids. It is a way more pleasant experience for raiders to have multiple bosses and larger areas to discover, than to be stuck at 1 boss for weeks/months. If that would be a thing, I would be okay with upping the difficult for the endboss of such a raidtier.

If the world best group clears a tier in 24hrs, that means 3 weeks for a midcore static(3days a 3h) with equal skill. They are not equal skill though, so its gonna be more like 4-5weeks, guides are gonna start being a thing. But then you have a big chunk of casual raider who maybe only raid 2 days a week and aren't playing so well. They gonna take months for it. It seems okay to me. They just shouldn't simplify jobs too much or savage is gonna end up being a meme.