You're conflating unrelated issues. The post you reply to, and the one it replies to, are about whether such a patent can be valid, given the prior art. Yours is primarily about to what extent Apple can be credited for research it has bought.
On the topic you want to pursue, buying intellectual property isn't the sin you seem to believe. Apple fans give the company credit for commercialising new markets - they spot an emerging technology and give it that final polish to make It really work as a mass-market product. Only in the imaginations of flame-happy comment-board drones does anyone argue that there was no GUI before the Mac, no MP3 player before the iPod, no smartphone before the iPhone, etc.
Apple's presentation of new products can be overly smug and cause a deserving discussion of the antecedents but this isn't that sort of situation. It's a granted patent application released by the patent office.