That makes a lot of sense, and that they're simply not thinking that that 2am in the middle of nowhere is in fact with a group of friends safely walking back from the club, and that 8pm in their bedroom is not going so well. They're thinking as someone in control of a young child.

Though also, tracking for "solo travelers"??? Sure, wilderness hiking if someone wants and it is appropriate, but to go on holiday alone? And I speak as someone who texts my parents when I arrive (and expects them to text me likewise).