This was built into the system. I have actually seen other threads where assembly talks were essentially titled "You Are Not Doing Enough". No matter what you do, it's not enough.
This starts immediately. It starts with one hour a week for the study. Then soon it isn't enough: they want one meeting per week in addition. This grows to three (actually five, but two are segued so it is three trips to the Kingdumb Hell). Soon after, they expect talks. At first, this isn't too bad but eventually they will put you with a talk that you are not able to do without being a hypocrite and mark you a W.
Soon after that, service starts. At this point, one or two hours per week is enough. But they will continue hounding you to get baptized. From that point on, it's all uphill. In fact, I have heard a few talks during service meetings that if you can put in 30 or 40 hours a month (which could well be the absolute best you can do), then you can pioneer. Back then, it took 60 hours to auxiliary pioneer each month.
So you get your hours up. If you do 10 a month, soon they want 20, then 30, then more. And they want you to pioneer. I got a KM with an insert that suggested that August (hot and muggy, dodos) be used to auxiliary pioneer and use that as the stepping stone to regular pioneer. Little did anyone that blindly followed that advice know that if you can't handle auxiliary pioneering (or can barely), you will then have the commitment to regular pioneer after that. And there are those months with five Saturdays, five Sundays, or five whole weekends where the KM would invariably suggest that if you don't pioneer during those months, something's wrong with you (perhaps those people work many or all weekends, dopeheads?).
Beyond there, it gets worse. So you regular pioneer. Soon they are going to want you to go where the "need" is greater. Missionary work is always beckoning--especially in Nigeria where they need more Witlesses as much as I need a virus in my computer. Special pioneering is also recommended. And the hours are escalating: they get 140 in a month, and soon they are going to compare you to a brother who is getting 240 or 250, or more with a handicap. And it goes up from there. Remember, there are only 744 hours in a month that has 31 days (720 per 30-day month).
Men have it even worse. The entry level is not good enough, since there is always the "Reach out" theme in many a service meeting part. They become assistant hounders, then hounders. (I call them hounders because they spend so much time hounding people to do more). Beyond that, they have the traveling work. There is the hounder-hounder, who hounds the hounders in congregations throughout the circuit. This is why they crack down on the congregations after the CO shows up: I call him the hounder-hounder for this reason.
The DO is the hounder-hounder-hounder for the same reason. He hounds the hounder-hounders to hound the hounders to hound the flock. And it works all the way up the chain. Anyone not reaching out is going to be hounded to death. And if the local hounders don't, the hounder-hounders will make sure they start. And anyone who gets left at one level is probably going to find out that they don't like people that get stuck in those "ruts": stop doing (insert anything fun) and start doing more service and better service, and Jehovah will remove those "blocks" that are stopping you from advancing. And then when you make the adjustments, nothing happens and you have to make even more.
No, they do not appreciate anyone at any level. No matter how much you do, they want more. I wonder if someone were to single-handedly get the whole world in the cult, if they would still find something they could have done better.