I think you should probably read the links you post. They are close to claim exactly the contrary of what you say. As the Wikipedia article rightfully points, the difference is far less obvious than you make it seem.

The definition of an interpreter is generally broader than a main loop running instructions one at a time. For example, everyone seem to agree that Python is an interpreted language while python interpreter transforms the source code into an IR before passing that to its main loop. Truth is the line between what is a VM, an interpreter and a compiler is rather fuzzy.

The implementation of a process virtual machine clearly is an interpreter of a bitcode. Now, it's not entirely absurde to consider the couple JIT and VM taken together as an interpreter. Actually, this is clearly encompassed by the third point of the definition of an interpreter provided by Wikipedia : "explicitly execute stored precompiled code[1] made by a compiler which is part of the interpreter system".

To come back to the article discussion, I agree with the previous poster than the expression "source code VM" is kind of meaningless. Actually, the paragraph following is even plain wrong. The Dart VM executes bitcode not source file and Dart is JITed.

In the same way, I find it quite surprising that forty years after Hindley paper, people still confuse type annotated and statically typed but well, c'est la vie.