That's actually a direct steal from Arthur C. Clarke's novel. At least they acknowledge the source on the page.
Originally Posted by 01101001
Stopping and restarting the spin of the entire ship would be wasteful in terms of energy and propellant. And you'd have to build it to withstand the tension forces from spinning as well as the compression forces generated by the engines. And looking out the windows would drive you crazy.
"For shame, gentlemen, pack your evidence a little better against another time."
-- John Dryden, "The Vindication of The Duke of Guise" 1684