I'm interested to hear what is said.
Ditto to what you said about matching selvedges and then folding smooth ... though not always the cross and length is "squared".
In 4-H we were taught how to straighten fabric .. though I never hear of folks doing that.
By the time we slice and dice all our fabrics and then put them back together again ... and then quilt .... perhaps it doesn't matter?
I don't know .. and will look to follow the discussion.