Thank you for your feedback. If you take a look into our past patch notes, you can see numerous exploit fixes. You also already know about the Exploit Hunters website. If we did not care for fixing them, this website would not exist.
You may want to understand the process of bug/exploit fixing more and maybe your software engineer friend can help! But it’s a hard process depending on the bug. You need to understand how it happens, what to fix to make it not happen anymore, make sure other things don’t break due to the fix, deploy the fix, test the fix, and so on. Thank you for your patience!