Please give a detailed explanation as why it is that you see the posts in this thread as strengthening the "flat-earth" position.

I have seen the Flat Earth Horizon with my own 2 eyes many times.

Of Course not.
Do you believe all of the Infallibly Defined Dogmas of the Catholic Church without innovation?

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Oh, I see. And have you ever looked at the phases of the moon?
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On the contrary, the music is the best part. As for the rest, been there, done that.
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Tell me, Cera, you seem to be capable of thinking:
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How does one in let's say, Australia, see a full moon in the following model?
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In case you missed it, the moon is depicted right next to the continent in question.
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So someone standing on the ground in Australia would be looking UP at the moon.
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Would he see a full moon?
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NO.
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Its counterpart, heliocentrism is condemned and flat earth geocentrism was always the model scripture, the saints, Fathers and Popes promoted.  So without considering it at all, one places himself in the camp of pagans and pagan theory.