Why do people care about feat taxes?

[Asmotherion]

Well, first off, you DO get those spells, because spellcasting is (Ex).

Secondly, the logic is clear. The DMG is the primary source on PrCs.

CarC and CW are primary sources on their own PrCs. Open and shut.

So you propose that RAW i can Chain-Polymorph myself into an Arcanaloth or Dragon to effectivelly have infinite spells per day?

You do understand the absurdity of the statement and that choosing to creativelly (and abstractly/incorrectly) interpreting rules this way results to extream forms of munchkinism?