I thought that it was for that reason.

I don't know enough about kernel objects, libraries, etc. for it to be much help to me.
I don't like using those "kill this message box" options (in any software).
Once you've killed them how do you get them back?
"Murphy's Law" also suggests that once you've killed the message box, you'll miss an important message.

IMO, operating systems should have an option that determines the size of error messages:
- Detailed: Multiple paragraphs
- Standard: One or two paragraphs
- Brief: One or two lines
- Alert: "I did this" message
- None: Terminal-style (for experts who hate messages)