This is nonsense. And, not that there's anything wrong with classes, but compilers no longer need to 'insert fake classes' for anonymous functions since Java 8.
Yes, and? Classes are not inherently bad, hence saying that JVM should not be invested in because its bytecode requires classes is nonsense.
re: inline lambdas, they have to be _tied_ to a class, and defined as methods, indeed. But they no longer have to be standalone classes themselves since JDK8