Describing truffle implementations as alternatives to Java implementations is not quite correct. They are always alternatives for the reference implementations

Describing truffle implementations as alternatives to Java implementations is not quite correct. They are always alternatives for the reference implementations (CRuby, Cpython). They're also not really about integration with Java Bytecode Also Truffle will let you run C extensions unlike regular jvm implementations due to the polyglot nature of Graal and Sulong