I'm not sure I follow - sure, if teams use rank as a condition on selection then your rank will matter to your chances of being picked up by a team. That certainly makes sense.
But for myself, I play to have fun, and I find winning fun, so I play to win. If I win then my rank goes up, but that's not why I'm playing. Of course, I also want to improve at the game, and reach some level of competency, but rank is not a very reliable indicator of competency. If you're good at the game then you're more likely to achieve a high rank, but you can achieve a high rank without being especially good at the game - at best, skill is a sufficient but not necessary condition on high rank.
I don't really understand your point about ignoring contact from low rank players - seems pretty churlish to me.
Finally, there's absolutely nothing hypocritical about maintaining a desire to improve one's rank, but also suggesting that rank does not matter to the point that one should be stressed out by the prospect of dropping rank, and I think that's been the thrust of many of the comments here.