Why oh why would "The de facto standard platform for web development is the Macbook"? Web is browser interpreted, last time I checked safari was not the most us

Why oh why would "The de facto standard platform for web development is the Macbook"? Web is browser interpreted, last time I checked safari was not the most used browser (even it it has port for windows) http://www.w3schools.com/browsers/browsers_stats.asp http://www.w3schools.com/browsers/browsers_stats.asp "especially among Ruby on Rails developers" why? is there any feature tied to the macosx that makes it worth to pay the mac tax??? or even to the hardware (that it's a wintel platform (and can be have for way less money) since apple decided to abandon IBM cpus?)