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Perhaps I'm missing something critical.

As I understand it: when astronomers are looking at things a very long distance (measured in lightyears) away, they are looking at how things were that number of millions/billion(s) years ago.

Based on my possible misunderstanding, shouldn't any such claims be made on the basis of how things were and with no indication as to how things may have changed since?

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The universe... what a concept. You know, the universe is a little bit like the human hand. For example, you have Growmann's Center right here and then you have undiscovered worlds and and Sector 8 and up here is Tittleman's crest so you can kinda picture it's a little bit like a leaf or, well, it's not a bowl. The universe is beautiful. Put all the stars, the hundreds of stars that there are in the universe into a bag and put the inverse into a bag and all of a sudden they become, well, when i was a child there was thought to be 9 planets but there are now ninety planets you know the ultimate fate of the universe is so dark and mysterious that it generates butterflies in my stomach and that goes to tickles in my spine and that creates goose pimples and then that penetrates my mind and then the whole big bang explos - BWOOO BWOO BWOO BWOOO BWOOOOOOOOOOOOOO

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