Yes, the man deserved to be stabbed ...

[dogtag]

Can't think of anything worse than to be reading a good
detective yarn, and then having some idiot whisper to
you the "The Butler Did It".
The only thing even worse than that is if he kept doing it.
Yep, that'll get ya stabbed all right.

https://nypost.com/2018/10/30/antarctica-scientist-stabbed-colleague-for-spoiling-book-endings-report/

[Vern Humphrey]

I wouldn't have stabbed him -- just broken his nose and kicked him in the crotch.

[dryheat]

Russians aren't always easy to get along with. Some of our astronauts found that to be the case.