Why are half of Pathfinder's nodes plain bad game design?

Lets begin with prolif.

An ascendancy node that is literally weaker than a cheap herald (?) AND is incredibly unsynergistic with is following node. Why is Prolif just one poison? The game incentivizes you in a lot of ways to stack more, INCLUDING in its OWN ascendancy. Second, the radius. Wtf is that 1.5M radius? Jesus it need at least 2.5 to be half decent.

Then, the following node. Why is there the need to have such huge downsides? Where is Stormweavers downside when she can apply two shocks? It feels like its 2 completely different game design teams working behind the different classes.

Then there's the "Slow" related branch, and LMFAO. I don't have the data, but I'd be willing to bet that noone has allocated the "Immune to Slow" node. In a game where theres freeze, maim, temp chains and 25 million kinds of cc that will destroy your character, can you imagine having to spend FOUR ascendancy points to be immune to the basic slow? Its pathetic that this even went past any form of game testing or management.

Then there's the Concoction skills, giving multiple elements that do not have a SINGLE node nearby ranger to scale in the tree KEK.

Go ahead, nerf PConc, we all know how this is going to go.

(remove rarity from the game).