Not really.
What it actually tells you is this:
Telemarketing is a hell of a job. Every night you make hundreds of calls, and experience rejection hundreds of times.
If you're really good at it, you can make good money. The very top producers get publicly showered with all kinds of money and honors and prizes. They bring in a good income.
The only way to get to be one of the top producers is to forget about integrity, honesty and actually serving the customer by meeting his or her needs. The only way to get to the top is to be prepared to lie, manipulate and creatively describe your way there.
If you're not one of the top producers (note: if you still have integrity or a genuine, not fake, concern for people, this excludes you), then you get paid peanuts, while being continuously promised that if you'll just persevere, better rewards are just around the corner.
Few people last very long at telemarketing, even when they're financially desperate. This is especially true if they have any ability to think for themselves.