The QVC social media platforms are used for very practical business purposes: to promote their programs, QVC products and QVC.
Absolutely nothing unusual about that or someone looking. These are open, public, business related pages, not private. The amount of personal information a host chooses to reveal is at their discretion.
David has 540,000+ followers; Shawn 230,000+. Fairly impressive numbers.
I hardly consider these folk to be "stalkers."