The way I uderstand Lupin is not to charge for hacks that members create and donate for the sake of improving everyones tracker, but if I have a site and want him to make a tracker version that works for me, then I should pay him. Also, if someone needs a very specific hack for thier users that others may not need, then they should pay for the extra work, otherwise who would bother to do it for them?
Another thing about that is some folks on other CMS Sites pay for custom work, like design/layout changes to suit thier sites, then turn around and post it on the forum for others to get for free, and since they paid for it they can, but it would be unfaur if Lupin did the work, got paid, then put it out for anyone else to get for free. I think the point he is making is if there is work to be done that no one else needs, why do it for free? I would expect to pay for someones knowledge if I didn't want to learn myself.