What the Catholic Church says about condoms is not the point of this thread or this forum and doesn't make the WTS position on blood any more tenable.
The WTS has published a lot of medical information about the risks of blood therapy. Why? If it is a centrally a religious point then why have the HLC? As I have argued elsewhere the HLC is there to ensure the JW's get the maximum allowable blood therapy (97% of whole blood at the last count) as most misinformed JW's would refuse 'everything' - more needless deaths and bad publicity.
Claiming the WTS are incorrect in their intepretation of scriptures such as Acts 15:28,29 is not unique to KLW - mainstream Judaism and Christianity have come to the same conclusion.