The Japanese have a split reaction just like the west. Some hate it, some don't. SasuSaku is the most popular het pairing in Japan so its natural a majority will love the ending. NaruSaku is pretty popular too so alot also hate the ending. As for NaruHina, I think alot already accepted it due to the movie. As in they saw it coming because of that.
You forget that shippers are a minority though. The majority of people read it for the storry, which frankly sucked ass in the ending