Fat seats installed on trains: Good move or not?

We know that the world is slowly turning grotesquely fat, what with all the Mcdonalds and other fast food chains and their up-sizing around. It's quite a painful experience to watch fat people squeeze into seats with half of their body spilling out! Thankfully, they don't have to endure the tiny cramped seats anymore as special chairs have been installed on trains to cope with rising obesity rates. I'm not sure I like this, because it only gives them lesser motivation to shed all those excess pounds. So instead of catering to them, we need to tell them to get up and exercise a bit. That's the only way the obesity problem will come to a halt. What do you think?