The Attenborough narrated Life BD set is coming to the U.S. and will play just fine. It will be released on June 1 according to your Amazon link. I'm glad they're giving us the option because Attenborough kicks ass and Orca, well...doesn't.
The people encountering problems are those who imported the region-free U.K. version only to find that it's encoded at 50Hz and won't play in most U.S. BD players. This isn't a widespread problem, period.