Agreed. I can't really believe I am reading this discussion. Languages are just user interfaces. It's OBVIOUS that there's a difference between the granularity of the Java UI and the C UI. It's also OBVIOUS that such a difference would greatly impact the speed of use. I could write a garbage collector in C, in Java it's already there. The whole point is discussing those differences, so anyone saying they are the same has completely missed the point of the discussion.
It's like saying Windows 11 and OS/2 are the same because they are both Operating Systems.
What you're missing is the level of comparison. Everything is different from everything else if you're looking only at differences. But if you want to classify concepts, you need to determine what are the similarities. So, yes, if you're talking about objects in the category of operating systems, W11 and OS/2 are in the same category. If you're looking at languages that offer high level constructs, C and Java are at the same level. Languages that offer only direct machine instructions (assembly) are at an inferior level.
It's like saying Windows 11 and OS/2 are the same because they are both Operating Systems.