As far as this topic goes I think there should at least be some large red text added at the start of the round for AI's and borgs that reads something along the line of
"Remember that you are not security, while you are able to assist when asked, do not willingly go hunting down EOCs or go bolting them in areas".
There have been far to many rounds where I have seen AI or valid hunting borgs single handedly ruin rounds for antags, and while some of it comes down to the skill of the player like with how Gatchapod said, not every situation is escapable and 90% of players will not have the skill to do so. A recent example that comes to mind for me was when I was being chased by a borg who flashes me so I cant see, while running from five to six sec officers, then while trying to escape down the hall the AI bolts every door, leaving me at a dead end with the only way out now being to go through all of security. This is not fun gameplay to have to deal with.
There have also been far too many borgs that I see while spectating going around valid hunting mid rounds, such as a medical borg attacking a bio hazard nest with no crew inside, alone in toxins. Or another example being an engineering borg welder bombing a xeno nest before the bio hazard alarm was even sounded, borgs chasing down antags to flash spam them, etc. While alot of this comes down to the player I feel that valid hunting silicon's are way more common than normal crew because of possible "crew harm", and having to deal with valid hunters that don't slow down when they are hurt, can bolt and shock doors to prevent escape, and in the case of the ai only being able to be delt with IC by attacking highly secure and defended areas far out of your way normally.
end of the day I just think something should be done because bottom line, its not fun gameplay.