I'm just messing around, I use Python and Rust all the time and I love them. But the larger point is that these are not representative of the average tech job. Most of them are C#, Java, C++, JavaScript, etc. You pretty much only see Rust postings for startups. Python is more common these days, but it was also a HN meme at one point:

http://www.paulgraham.com/pypar.html