A few days ago, I played against someone who, for the first few matches, played normally, but kept falling for very basic stuff. The third or so game, he went Kirby (I was Luigi), and he hid in the Hyrule tent and spammed up-tilt. I teased him and approached close to him, and jumped away, and as I thought, he used a few up-tilts. I instead just waited up top and spammed fireballs, waiting for him to do something instead.
But yeah... some people play to win, but use the most basic strats for it, gaining no skill, like the guy I played. The ones that want to get better are the ones that will get better.
I guess what I'm saying is that from what I noticed, there are either people who play solely to win, or play to learn/improve. (You know what I mean)
Edit: Just played against someone who spammed nothing but backthrow off stage to down air (he used DK and Samus... yes, spammed grabs with Samus). After losing two games to me (the second being a 4-stock Falcon vs Samus), he kicked me, and waited for someone else to join. Just shows you that some people only care about winning with the easiest strat just to feel good about themselves, and won't improve at all.