Do folks actually study courses? I may take the extra look, drop a ball and replay a shot once in a while or hit a few extra putts, but I don't think I ever studied a course. I play courses, take pix and mentally record observations.
Without a doubt I miss stuff probably because I don't get paid to notice stuff. Learning courses isn't magic and it doesn't require any special skills. I pay to have fun and take away my impressions - which are only snapshots of golf course reality. It takes a lot of time and plays to really know a course of merit.
As for spite, I can't help you there.
Ciao