I agree that many people don't understand what a 100% workout is, but "There's not really a way to cheat your body or find an easy way out of a workout" is unjustified by the evidence. It's suspiciously close to appealing to justice, e.g., "You won't get fit without hard work because you won't deserve it."

People have swore by all sorts of unpleasant fitness regimes in the past which are later shown to be unproductive. Now, we have good reason to believe that you can't be an elite athlete without putting in lots of time, simply because elite athletes can be easily identified; we'd see more elite athlete with short training regimes if it was possible. But, like the incredibly muddied literature on nutrition, it's not at all clear how to optimize moderate (non-elite) exercise for long-term health benefits. We really don't know where the low-hanging fruit is, and its entirely possible that most people are wasting their time.