How to calculate dust (closed)

Hello, I was trying to understand more about Litecoin dust. I came across https://theliteschool.com/lsc/staging-core-releases-and-litecoin-dust, but I don’t understand some things:

1. What is the “minimum average output size”? What average? Transaction output? So, what is “minimum”? If you do the average, there is only one result…
2. The same applies to “minimum average input size”.
3. Does dust change from block to block? From transactions to transactions?

Also, this was a few years ago. Is that calculation still correct? Is the same for Bitcoin?

thank you