There are still some of us who have CB radios (with all their limitations acknowledged) in our vehicles for back country emergency use, and I occasionally see mobile ham radio operators. A Garmin inReach seems like it would be a good addition.
https://www2.gov.bc.ca/gov/content/industry/natural-resource...
A CB radio doesn't help much with that, but it is just another means of possibly getting contact with others.
Transmitting may require licensing, but listening should be fine.
Just one other point: on an FSR an average person's general sense of traffic "right of way" is generally wrong and can result in some terrible accidents far from help. To wit: the bus crash involving UBC students outside Bamfield.
Those Baofeng radios are VHF/UHF (140MHz/440MHz) FM radios, not "CB". If you had a Baofeng, and your buddy had a CB, there is no good way they would be able to communicate. These radios can operate in a wide range of frequencies with various levels of legality. But yeah in the US and Canada its generally legal to receive a transmission...other than maybe old cellular phones but that's another complicated mess.
Said family member mentioned in the parent thread keeps a handheld radio (I don't know the exact tech specs, sorry) for such occasions. That said, they mostly use it to just listen for any logging trucks calling out checkpoints so they can avoid getting in their way when travelling to their remote campsites.
Coupled with a Garmin inReach w/ backcountry maps installed, it gives us peace of mind in case something goes wrong out in the bush.