I'm kind of curious why it bothers you?
I spent some quality time today trying to find a member's profile -- by looking it up in the member's list. I was greeted by page after page after page (after page after page -- you see where this is going right? Thought so.) of folks who dropped in for a beer years ago and never returned. After a (long) while it started to annoy me.
I get it that member numbers help make SN an attractive place for advertisers. I also get it that not everyone who joins wants to contribute (which is perfectly OK).
I'll be the first to admit that if this is what's scrunching my boxers, then I got no troubles at all.