Radios. If you are on the water you can use a marine VHF radio. Not sure what frequency can be used for wilderness that is actually monitored by emergency responders. Alternatively you could become a licensed HAM radio operator and send maydays with it.

But I agree, ultimately it would be good to be able to send a text or voice message with the locator beacon. Otherwise, as they become cheaper their usefulness because of accidental and improper use will become less. Maybe implementing a flat fee of a $1,000 US dollars per button push would be a good idea to remind to people that sending out rescue teams to check on someone is a major undertaking .