While semicolon insertion itself does cause many problems, the mere fact that it exists as a "feature" of the language is perhaps a bigger problem.
There's no justifiable reason for it to exist. The drawbacks should have been clear from the moment the concept arose, and it should have been scrapped before ever having been implemented. That's the only sensible response to it, after even a minimal amount of analysis.
A missing semicolon should be treated as an error, causing the execution of the script to be immediately halted, and the programmer notified of it. It is as simple as that.
There's no justifiable reason for it to exist. The drawbacks should have been clear from the moment the concept arose, and it should have been scrapped before ever having been implemented. That's the only sensible response to it, after even a minimal amount of analysis.
A missing semicolon should be treated as an error, causing the execution of the script to be immediately halted, and the programmer notified of it. It is as simple as that.