The first example because they hope your desperate enough.

For the second example, because most engineers value honesty because a lack of complete transparency cost time/money or worst kills people. And frankly, most engineers like technology and could care less about the company and/or the industry. And that's why they are horrible at sales. And what your asking for is a kind of sales.

http://www.bbc.com/news/business-34324772

http://money.cnn.com/2015/12/10/news/companies/gm-recall-ign...

Btw, I'm not saying you shouldn't look for engineers that have people skills, just why your having a hard time finding them... :)