Switzerland is a good deal more populated in Canada, making the value of registration less. You have to look to find a trail that doesn't get walked over regularly in the summer. Also, cell phones don't work everywhere in the mountains, but you normally have signal when you have a view of a valley.
All that said, people do die in the Swiss alps, and not just from BASE jumping.
As mentioned, the "Zurich Hiking and Outdoor" group on meetup is fairly active. They generally don't do anything technical, but the hikes are not professionally guided tours either and Swiss terrain can be steep. The SAC
is also something to consider, especially if you want to do more technical or otherwise intense things.
Occasionally there have been attempts to arrange hiking meets with this forum, to the best of my knowledge they haven't had great turnouts.