There are more secure location sharing apps out there that are end to end encrypted. My family uses Zood location https://www.zood.xyz/ when we are out and about and needing to coordinate our locations. It is handy to use sometimes but it doesn't do all the spy stuff the other apps do.
I self-host Hauk, although I could not polish all the bugs myself, it works pretty well.
We have location sharing on 24/7, it was consensual on both sides, and it is great when coordinating.
I am 27, tho, back in my teenager days there was no location tracking easily available, but I'd use it in a heartbeat. Better than getting asked if I am already on the way home or still at the party.
I mean, just carrying a cellphone with mobile reception is almost like a 24/7 GPS tracker although obv no parent is generally going to be able to (not should they be able to) like warrant or subpoena that shit from the network carriers/towers