Yes, they need a job ... boo hoo.
So many of them are utterly outright fraudulent I have no sympathy for any of them.
The Microsoft Support? The air duct cleaning? Rachael from cardholder services? That cruise I supposedly won? The people calling to say I owe tax money or will go to court? That opinion poll I have no way of knowing is real?
Sorry, all of these things means I simply can't expend the time to give a shit about the feelings of some random telemarketer, since I have no way of knowing (or caring) if they're yet another fraudulent asshole, or just some poor schmuck trying to earn a living.
If I have a business relationship with you, send it to me via mail, in an official company envelope on official company paper ... if I don't have a business relationship with you I'm not prepared to invest any energy in pretending I don't assume you're running a scam.
So, I can't spend the effort to feel sorry for the honest ones, because they've been drowned out in a sea of lying bastards.
Feeling sorry for them is simply no longer possible.