My point was only that Betelgeuse might be close enough and big enough to be more than a 1D point from our Earthly outlook since our eyes can just about tell th

My point was only that Betelgeuse might be close enough and big enough to be more than a 1D point from our Earthly outlook since our eyes can just about tell that it isn't perfectly round even without a telescope. The Sun certainly is. No other star is.