Umm… so this is kind of late, so awkward…
But maybe by “fat fingers,” Avi K meant figuratively.
I just reread that post. It followed the part about kollel wives working and supporting their family and husbands. We learn from Torah that “fat” represents an abundance, such as with the fat cows and thin cows. The fat cows were years of plenty. The thin ones foretold of the famine.
Here, perhaps Avi K meant that the husbands are living via the earnings of their wives as they study. Granted, that’s not to say that their families are raking in dough. Still, it is another interpretation.
Initially I was offended, and it sounds any sweeter to the ears now because the word “fat” has a negative stigma (now that we’re not living in the 1600’s). Even so, maybe this wasn’t a take on one’s physique. Dunno if it makes it better, just thinking.