I've never outright lied, though certainly hemmed and hawed. And occasionally blatantly "I haven't done anything this week". And yeah, certainly work-from-home makes it easier to shut down and ignore everything. Which is great, except you feel like crap afterwards.
But like I said, it depends on the project. Next job I take, money is going to be less of a consideration. Just want to work on something interesting. And there's a reasonable likelihood that I fall into the category of "needs professional help" (I also flunked out of school twice and took six years to graduate, despite getting five 5's on AP tests and only needing two years' worth of credits), but I've tried a few times without much success.
And, no I don't think it's super-common. At least not to this level. Most of my coworkers seem to genuinely work pretty hard. Though some don't.