By this logic anything meaningful anyone does is actually done with C, because no matter what you do there is 40 million lines of kernel code underneath...
"What is the importance of Django, it's only 10 thousand lines of Python, powered by millions of lines of interpreter written in C..."
No, the kernel does not solve the major part of the reverse engineering, the Java application Ghidra does.
But Java does not need any marketing, people just quietly use it.