This site is owned by the people who supported the forking of bitcoin to bitcoin cash and the CEO is Roger Ver, who was once a big spokesperson for bitcoin and now is supporting bitcoin cash for his own reasons. The main website for bitcoin is actually bitcoin.org and bitcointalk too, both owned by Cobra which are the official websites for bitcoin, whereas bitcoin.com isn't official at all. But most of the people always search for a .com domain so they land upon the domain that accepts bitcoin cash as a default currency.