I partly agree with their view that this is indeed a vicious cycle - half the week is spent looking forward to the weekend and half the weekend is spent dreading the week ahead. This sort of cycle doesn't allow work productivity during work ween, nor does it allow people to relax / unwind as much as they wanted to during weekends. What I don't agree with are their views: 1) on people looking forward to the weekends only because they don't enjoy their work and 2) about evils of weekend unwinding.
Looking forward to the weekend isn't just about getting away from work, it mostly about connecting with oneself...connecting with family & friends...spending time together and at leisure...doing household chores...doing things that are not necessarily structured and are not 'same'. Also, I can never see the harm in an old saying - work hard, party harder. If people want to keep 'work hard' bit from Monday to Friday and then 'party harder' bit for the weekend, so be it!