Earlier quoted context omitted.
Care to elaborate?
It's naive to think western liberal cultural change is a one-way street. This is the kind of thing that comes in waves. Just look at the radical transformation of the pre-colonial Kingdom of Buganda into present-day Uganda with its sodomy laws and internet meme pastors, perhaps ironically catalysed by the west, a west that has since flipped the complete opposite direction. It's only a matter of time before the tables…
If you look beyond the rather limited filter of "western liberal cultural change" you'll see that, while yes politics and societies shift over time, acceptance of same-sex relationships has been the norm in many cultures more often than your comment might suggest.