It's the hostile people who have the least amount of courage to ask and face what other people get because those people who get are the ones who are brave enough to take the risk.
I'm not sure I can absolutely agree with that statement. I am not ambitious or assertive with employers, partially due to being introverted, partially due to not knowing my worth, and now largely because people convinced me I have none. But I definitely don't turn around and throw hostility at people in jealously of their work lives. I may express envy, but that's not hostile. I only get up in arms over the topic when they make sweeping statements about opportunity and success/failure through survivorship bias (because, no, hard work isn't all anybody needs), or when they make unreasonable criticism of others (like this thread).
Some of the most chip-on-shoulder anti-worker people I've met in real life have been people who were small business owners, showcasing success, demonstrating the ability to be assertive, willing to grab at opportunities, but also some kind of childhood issue that made them overcompensate/develop bitterness toward anyone for critiquing them, and then targeting scapegoats for their continued gripes.
One of these was a general contractor who worked on my house for a rehab grant. He seemed great: the ideal of professionalism. "We do it right the first time"... and all that... until he one too many times spewed his "people are lazy" rhetoric AND, upon realizing he'd underbid the contract and wasn't making as much profit as he expected to, vanished for weeks at a time to do other jobs he thought he'd make more money on. This was expressly forbidden by the county contract, but here he was, demonstrating a selfish/lousy work ethic, after spending the prior weeks trash-talking employees and young people everywhere for their lousy work ethic, and showcasing an inferiority complex that manifested as egocentrism and toxic masculinity (getting him and his partner to wear protective eyewear and face masks when pulling apart my ceilings and breathing huge piles of shredded insulation was a process of offering and suggesting and being rebuffed until he finally said "hey, do you have those masks you offered" about three hours into breathing the mess).
This same guy also hired a sub-contractor to do new drywall, and this contractor SUUUUUUUCKED. How did this guy NOT KNOW this contractor was THIS BAD? He said "We do drywall ourselves, but we tend to do it more slowly because we're perfectionist about it". I would've been fine with perfectionist drywall work, but it wasn't MY time he cared about. It was his. So he hired a dumbass with a bunch of careless guys to throw the sheetrock up with incredible laziness. Oh I could go on for hours.
The point is, there are plenty of people I have known in the real world who behave like this IN SPITE of having their own success. It's like some success isn't enough to fill the gaping maw of bitterness inside them, so they lash out at other people. It's bully mentality. The only way to feel bigger is to try to shred other people.