Because galaxies ‘ride’ on space. And space has expanded since the BB. The speed of light does not limit the speed of universal expansion.
So does that mean that matter that "rides" on space is not subject to the speed of light and thus has traveled faster than the speed of light to get that distance from our galaxy? And that universal expansion exceeds light speed? And how long until that matter slows down to "under" light speed?
Doesn't this explanation imply that there is a possibility these galaxies are now as much as 26 billion light years away and we are seeing the light from where they were 13 billion years ago?