The problem is the ease at which we are connected - we assume cellular coverage is universal because everywhere we go there is cellphone coverage basically. And a lot of people who grew up with digital technology never envisioned there are alternatives to not being connected, always.
It happens all the time in BC, because we have a lot of urban trails and parks that are literally minutes from city limits. Cellphone coverage is basically there at the start of the trail because it's barely out of the city.
This ease is deceptive though - you think "oh it's only a few minutes away, we can do it for a picnic!" sort of mentality like it's a visit to the mall. Which is why people are consistently and constantly getting in trouble because they are as prepared as a trip to the mall.
And because the area can be mountainous the cell reception does get spotty so they can find themselves in trouble way too easily because it's just so accessible.
Most other people who never grew up with pervasive digital technology and connectivity will generally want to find more information first because you generally only left with the knowledge you carried with you and what's in your head. So you often researched websites, books, and local information to get more information ahead of time to plan things out because you usually couldn't have this information with you unless you carried it in.
These days if you need information its usually right there on your phone at that instant and your phone serves as the source of information without realizing it has to be connected to do so.
I've done urban trails and they can lead to a false sense of security - even though I live in a city, there are parks and urban trails within walking distance and it's like a little oasis surrounded by major road thoroughfares on all sides. (It's a park, so it's not going to be demolished for construction). If you do them a lot, you might get an impression that the less urban trails just outside the Lower Mainland are the same. We just have a lot of greenery that's easily accessible by walking, cycling, or transit. (Yes, you can get to them by car, but parking is a hassle as it always is in a city). Heck my neighborhood has a little park that's really only accessible by people in the neighborhood - it's really only used by people with dogs because if offers a reasonable area for them to run even though it isn't fenced off by more than a few logs. But the city comes around every month to cut the grass.