Endwalker White Mage has Issues

[Mansion]

I don't agree with everything, especially on MP economy.

While Thin air is definitely not ideal for DPS anymore, WHM is now the premium raise healer: Swiftcast + Thin air + Raise is just unbeatable. No other healer can raise at no cost.
And unless your party really messes up, you probably will always have a thin air with your Raise. It's really good.

Old thin air could do just that too... that's not the issue here. Making it the next spell only nerfs it by a lot compared to a duration of free casting (it was 5-6 GCDs before I believe?)
In any case, old thin air worked just great when you used it regularly, and has a great synergy with Lucid Dreaming.

And for post death recovery, Benediction is still completely OP and I have not seen a single time in any of the 2 new Extreme primals where I would need to use benediction on a tank.

You didn't get OP's point. They meant if you die, you get raised, and Lucid / thin air are on cooldown, you get terrible MP regeneration (only your piety score actually, and Assize perhaps).
AST keeps their seals, which means they don't interrupt their astrodyne flow which has great MP regen. They draw more often that WHM Assize too.
SAG keeps generating Addersgall when they die, which means they usually have some stacks pooled when they raise, which offers quick MP regen per use, and do great healing or mitigation that is not hindered by death debuff.
Arguably, SCH also has a hard time in the similar context, but their 1min button (aetherflow) gives them 20% of their mana, which is better than Assize. And they can use these to heal too, with no mana cost (while WHM has lost their lilies with their death), sure Benediction is strong but that's not the point here.

Death excluded, if you pop Lucid Dreaming on CD there is no real MP problem with WHM, and Thin Air here and there to better benefit MP regen ticks works fine, but WHM have a harder time if they forget Lucid Dreaming compared to the other 3.