And yet, my bottle doesn't say "Go crazy! This stuff is really safe!"

Instead, it says: "Do not take more than your recommended dose. An Advil overdose can damage your stomach or intestines. Use only the smallest amount of medication needed to get relief from your pain, swelling, or fever."

Yeah, which only establishes that the baseline understanding the common person has when taking drugs is to take the recommended dose. And nowhere was Trump saying "go crazy".

Alternately, that (legally-mandated?) warning is there because a non-negligable portion of the population needs regular reminders that more isn't always better.

Yeah, but you have to be a whole new level of stupid to search for a drug not sourced from a pharmacy or sold in the medical section of the grocery store and take an unregulated amount without any medical oversight.

People come up with crazy, brain dead ideas all the time. There are flat earthers for crying out loud.