I mean, it's pretty obvious in Storm King's Thunder, after a city was attacked by giants they're going to be on the lookout for giants pretty much all the time. Thing is, they're overland traveling hundreds of miles, and conveniently checking the giant radar every few miles seems like something you would want to do. I don't want to get caught out by a random stone giant or three (what actually happened that session). They then proceeded to basically track them at a distance while using some things to imitate a larger group of frost giants until the giants were fatigued. Nothing wrong with that in my book, but like... I don't know, five miles is a huge area and there could literally be dozens of different groups of creatures in it at any given time.