OK, let me try for one last time because as someone who has "worked" with the ESA and is so deeply embedded in it you seem to be missing a few things.
My original quote was from here. When ESA talks about Member States it mean its own members. When you highlight 'Member States' in your quote, also from ESA, you twist it to mean members of the EU - they are not.
When you state that ESA is not an extra EU organisation you might like to look at its Convention. It is true that there is an EU/ESA Framework Agreement regarding cooperation but that does not make one part of the other, either way. The ESA has no say over where the EU spends its money.
The EU funding to ESA is towards its flagship programmes, Galileo and Copernicus, and its research and development programme, Horizon 2020. But for the FA those funds could have been spent with other space agencies. The EU already spends money and collaborates with NASA and NASA is an independent agency of the U.S. federal government
It's a bit picky to complain that the ESA has various headquarters in European countries when those countries fund it. Where else should they be? The launch site is in French Guiana, an overseas department of France, simply because it is more efficient to launch near the equator and because it is on an east coast next to miles of empty water, also launching from the European land mass of any of the ESA member states would be over more densely populated areas, but you knew those things.