Aside from the legal implications mentioned above - it would do nothing for their cause.
But it would make him/them feel better having done it. Which shows the mentality.
A bit like losing a game of football and driving a spike through the ball before the game has ended so no-one can play.
The analysis of his response to "Engineers" is very interesting though.
I replied to his retort about groundstaff doing VCC because they had aspirations of being Full-time CC.
I said, not true, many are doing this for personal beliefs regarding their future and had no aspirations of being full-time CC at all.
His reply? "I'm gonna fill the Tech Log with defects."
The literary equivalent of a very loud raspberry.