That's only the right analysis for some. For others, it's "can you wake up in the morning and actually get stuff accomplished each day without someplace to 'go' each day". For about half the people, it makes sense to skip lecture. For the rest, it doesn't. If you are a self starter who will get a lot accomplished during those hours you would be in lecture, then by all means do so. If instead, you use that as a license to goof off more hours per day, sleep in, etc, then you probably shouldn't. I know a number of people who stopped going to class and saw their grades plummet, until they returned, because they needed that impetus to at least be "hearing" the info once each day before studying, rather than goofing off. So know yourself. If you are the type of person who will get up and go to the library and work without any distractions each day, then you probably can get more accomplished by not going to class. If instead, you are going to sleep in, watch TV, talk on the phone, go to the gym, take "study breaks" 30 times a day etc., then go to class -- you will at least get some exposure to the material. Try pre-reading before attending, it makes you more engaged if you already have some familiarity with the material.
Med school is about figuring out what works for you. Nobody on this thread should suggest you will do better by not going to class. Some will do better, many will not. Just like group study doesn't work for everyone, flash cards don't work for everyone, and so on. The smartest thing you can do in med school is stop looking at anyone else's plate but your own.