It is sadly typical of pprune these days, that we can even manage to make a subject on which we all broadly agree (that it can be busy out there, and we ought to use all the facilities available to us, Mk1 eyeball, crew co-operation, TCAS/TCAD, ATC, blind calls, etc. To avoid 'physical interaction' with another aircraft). And turn it into an 'I'm more right than you are' discussion. Surely if we are going to learn from incidents like the one in the OP, it's about encouraging good practice generally and not about personal point scoring?