Swift is 5 years old and yields more results then rust who is 8 years old. You know you have a good one when it picks up and just goes. All of them 3, poor Rust is the most talked about in HN and yet is the least used in real world. As for upwork skewing, you really have no idea what upwork is. They have absolutely zero interest to hide results as their money comes from those jobs people get hired for. So why would they cut their own revenue?