It feels like now you're saying it's not because it's parliament's nature to be like this, but rather these other factors that occure within parliaments and other systems?

Can't you unelect the MPs? Doesn't the paper thin margins increase those odds? Honestly, it doesn't sound like the issue is a parliamentry system, but rather people either aren't aware of the issues (media), or have decided (wrongly or rightly) not to care. Either way I still don't get how that's the parliamentry nature as much as it's the people's. That's kind of the point of these systems.

I don't know enough about Candaian Punjabi dispora to comment about the other stuff.