If people were encouraged to do a "reasonable and prudent" amount, it would avoid this problem. What is "reasonable and prudent"? It is such that it does not create undue hardship on the people doing it. If you are continually cutting back on necessities, unable to pay basic bills, lack time to do necessary repairs to your home, or are always sick and/or tired, it is not "reasonable and prudent". And "reasonable and prudent" means different things to different people. One person might have a job that pays $900 an hour, is very non-demanding and mentally stimulating, and excellent physical health. Such person might be able to reasonably and prudently do 120 hours a month. Another person, with a grueling job that barely makes ends meet, and is sickly, might struggle to do 1.2 hours a month.
But, when Jehovah and/or his organization (real or fake) starts insisting that someone else can do 200 hours a month and you are therefore expected to, there is a real problem. Is it possible that the organization, or Jehovah himself, limits what we can do by not generously supplying all our physical needs BEFORE they become critical? What if Jehovah were to make sure ALL of our physical needs were generously and promptly fulfilled? Then, it might be possible for such people to reasonably put in as much as 200 hours a month, and joyful at that. But, when Jehovah is grudging and stingy, it not only limits the amount the person is reasonably able to do, but makes it all fake.
Additionally, when you have nothing to show for your hard work, it makes it that much less joyful. One day, I budgeted a boasting session's worth of time to rig up Halloween lights in the hallway. Including installing clips in many places, I got professional-like results with virtually the whole thing installed in that amount of time. Had I instead wasted the time going to the boasting session, I would have accomplished absolutely nothing. And other tenants in my building would have had a more dreary time, including visitors coming all the way from who knows where to see them only to be let down. And, all it takes is one visitor from New York City to see my lights and then wonder why department stores there don't do it as well for me to start making big bucks--which is significant incentive to master the art of putting the lights up properly. Which is more than can be said about going to the boasting session.