I don't find it inconsiderate. the Parent poster is simply suggesting that if you don't have a job, and desperately need a job, take any job you can get.

He did not disparage people who become unemployed, it is obviously something that happens to qualified, hard-working people every year for various reasons.

I agree with the poster's sentiments. If I was ever in a position where I was unemployed, I would take whatever job I could find if the alternative was becoming homeless. Obviously, if Wal-Mart turned me down, that is not a job I would be able to take.