I would strongly suggest that only Mr Tymon knows whether his position in a continuing working environment with JC would be tenable or not. Your own first hand experience is exactly that, and because you were party to every minute of your prior history/relationship with the person in question, you know whether you can work around the situation or not.
None of us are privy to more than the minimum of knowledge required to make a judgment on whether third party A can work with third party B or not, and would only be guessing at their prior working atmosphere, even if an educated guess says 'not the easiest'.
What we can presume is that the favoured situation for person A is not to have to work in a difficult atmosphere in the first place, and failing that, not be required to grin & bear it to suit anyone else involved, be that an individual, corporation, public at large, & the general nutterdom. The point that this situation has been 'turned' into something it need not have been is to fudge the responsibility lying with JC, to behave decently to his production team.
I fail to see that anyone here
is advocating the application of an unbending moral stance as you suggest, merely that people are happy with their moral standpoint in this instance. Any amount of different instances would result in different judgments, cuttings of slack, compromises and trying to get best outcome for all - first and foremost the injured party, and all round - and with financial consideration in its proper place.
Undoubtedly, regrettable things are done in the workplace in the interests of keeping someone valuable in place. The instance you have cited of the news desk assault is highly regrettable but works only as an example of something that should have been handled differently; the fact that it wasn't doesn't really impact on this case. If you were to punch your co-worker as previously suggested and strings would be pulled to keep you on, I find that equally regrettable; and across the board where any individual (especially where in a weaker position than you were) feels under pressure not to speak out. At a life/death war/peace level, deals may well have to be cut to keep a crucial person in a crucial position, again regrettably. None of these instances are of that import, and where finance is the driving factor, it's even more distasteful.
The difference is that you find this state of affairs regrettable but unavoidable in the 'real world' (if I read you correctly), and that therefore there is almost no point aiming for better. I would disagree, and if that makes me a woolly idealist in your book, then so be it.
Anyway, on a lighter note, the situation has ticked off Cameron's 'heartbroken' children ('hunger strikes' and all, cue roguish parental 'it lasted all of 5 minutes' asides & so forth), and few things gladden the heart more than a thwarted 11 year old.