Not all the stickies were locked at one time or another---as some had some "unnecessary" posts at one time.
This was rather obvious the past few months (LOL). There are several examples:
EDIT: Posts that were made stickies by Karky, TM, and myself (which are NOT locked, with the exception of (the squat and dead lift chart), the others could be reviewed and be cleaned up and locked) in the weight training section--to me there are alot of clutter in them that could be cleaned up and give a more professional appearance. And, these are just a few examples. It doesnt hurt one bit to review it to make a decision, and this is positive contribution to this thread.
But, its a mod decision, and just my opinion.