I dunno so much, maybe the answer lies somewhere in the middle.
Sure it's nice to have traffic info, but if they are separated, why should you? In Jhb when you have IF at 8000 and the VFRs at 7500 one would have to give traffic info all day instead of control instructions.
Methinx some (not all) of airline pilots with a TCAS just sit back with their feet up. When flying into busy airspace, TCAS is great, but situational awareness and diligence are better.
ATC can obviouly be better, with appropriate additional information and control instructions, but still it's a TA and not an RA, sorry if you dropped yr paper but you were still safe.
One last thing, airports are open to everyone, that includes fling wings, trainers etc. Let's not forget where we came from or embrace the diversity of flight - twin jets only would bore me to tears.