A: "Im not sure I'd have the strength to do it myself if I had to" [because I'm depressed / have anxiety issues / am utterly burned out mentally].
B: "You'd have the strength to do that, too, if your (children's) livelihood depended on it. It's really not that hard if the other option is being evicted from your house."
C: You missed the [...] part.
The depression link is in square brackets. Can't say if it applies to 'HiroshiSan, but it applies to some people (to some extent, including myself - I had moments when I was barely hanging by a thread). Some people doubt they'd be able to handle it because they know they lack the psychological strength. And in depression, being threatened ("you have to do it, or else your family starves") may only makes things worse - it might just push someone past their breaking point.
It's like
A: Wow I respect people who can lift heavy stuff
B: Oh come on it's just a matter of workout
C: Holy shit I've had my share of trite flippant workout advice but I have myasthenia so workout won't cut it, come on.
(I react a bit strongly because I'd never give depression advice. I have no fucking clue about depression except that well-meant tips from people like me don't help, at best. I stay out of the way and leave depression to trained shrinks and people with experience)