If HFT businesses just don't bother using safe language then probably there is something in these languages.
https://medium.com/@jadsarmo/why-we-chose-java-for-our-high-...
Some random job ads picks,
"Senior Low Latency Java Developer" at Barclays
https://uk.indeed.com/viewjob?jk=41b8fb53bd4e24f8&tk=1hl2ggf...
"Senior Rust Developer" at James Joseph Associates
https://uk.indeed.com/viewjob?jk=c2865fa5668cf524&tk=1hl2ggf...
"Software Engineer Java Rust eTrading" for an hedge fund
https://uk.indeed.com/viewjob?jk=9c75cefc6a46276c&tk=1hl2ggf...
"Because Rust" and safety, of course. I wonder if programming on Windows just sucks in general, and all these are Windows trading shops. Do you even have all the tools you need to write large programs on Windows? Valgrind, libfuzzer, etc. etc.
Now those folks have a home in WSL.