I completely see your point of view. I am a member of another forum and one person said they are in the LE field and have watched postal inspectors get notifications on there phone from the system when a person tracks the package each time on the USPS website. How reliable that information is debatable. As I said it's just a thing in my head to track it on a different website than USPS. I guess like people that wear their "lucky" socks when playing a sporting event.
Given the amount of legal packages from various things like Amazon I don't see how LE would single out an individual pack because I am sure when someone orders light bulbs from a website and they track it everyday it's unlikely that it raises any sort of flag.
My gut instinct tells me that as long as you're not tracking something 10 times a day like a crackhead it's probably fine. I have just used various sites like 17track or parcelsapp for so long now it's a weird thing in my head in my subconscious that I do.
I have the belief for a long time that LE know certain places that ship that they look for so no matter where you track it from if they want you they will get you you. They want the big fish and it isn't worth their time or the money to bust someone for less than $500 of product unless it's a small town/department looking to make an article in the paper to show they are winning or fighting the war on drugs.
