Good questions. Yes, I concentrated on Pillar 43 in this article, but my peer-reviewed papers and book deal with several other pillars. Our interpretation of all these pillars combined is that they point the finger at the Younger Dryas impact and the Taurid meteor stream, consistent with the proposed date for Pillar 43. For example, Pillar 2 can be interpreted as recording the radiant of the Taurid meteor stream.

Our interpretation of the animal symbols is based on a statistical analysis which is so extremely secure, I can claim we have the definitive interpretation of these animal symbols. This is the scientific method in action. It would be irrational to think they are not representing constellations.

On Pillar 43, we have four symbols (eagle=Sagittarius=summer, bear=Virgo=spring, ibex=Gemini=winter, tall bird=Pisces=autumn) corresponding to each equinox and solstice of the recorded date, 10,825 BC to within 75 years. The conventional date of the Uruk vase is 3200 BC, which is 7,625 years later - slightly more than a quarter turn of the great wheel, so we do not expect the same symbols. Moreover, only 2 of the 4 symbols are shown (Leo=summer, Aquarius=winter). Yes, the ibex symbol has been switched from Gemini to Aquarius. We see this in many different places. The stag symbol has also been used to represent Gemini and Aquarius at different times an places. See my blog 'Stag vs Ibex' at martinsweatman.blogspot.com for a discussion of this. The Entemena vase illustrates this nicely.

Finally, to understand how our scientific case works, the best thing to do is either read my book or watch the introductory videos on YouTube - search for my 'Prehistory Decoded' channel.