I disagree. Just because there is a GC, it doesn't mean one does not have to be aware of the existence of memory. OOM errors are thing even without leaks in GC

I disagree. Just because there is a GC, it doesn't mean one does not have to be aware of the existence of memory. OOM errors are thing even without leaks in GC languages. Besides, leaks are only a small part of memory safety anyways. And I'm not surprised that you find the biggest leak in Javascript, the language that probably the biggest percentage of amateur/inexperienced developers are working in. (which is not generally a bad thing, but increases the chance for these bugs)