This is one of the main reasons that out of the 200+ hours I’ve spent playing TTT, only 20 or so of those have been within the past few years. TTT to me was always very much a game about paranoia and having to earn people’s trust; the game was based more around out-smarting everybody than about being a better shot or having quicker reflexes. You didn’t have to launch a full court case against somebody if you suspected them of being a traitor, you just had to be confident that killing said person would do you less harm than keeping them alive.
The strict RDM rules make sense though, since most of the popular servers have a way too many slots and the rules are the only thing keeping any semblance of order. TTT, in my experience, just really doesn’t work well when you get past 12 or so players.