They do, but then people either work around them, or rewrite in Rust.

Java has all these knobs, because the ultimate goal is not needed to rewrite, rather fine tuning, just like when you look at the endless command line options for GCC, clang, MSVC,...

It is also a matter of implementation, Android is Java (kind of), and you also don't get push knobs unless you are a developer talking directly to a single device over ADB.