Yeah, many players will become addicted to things like Fortnite but they just have addictive personalities and like all addictions, should be monitored carefully. These are just players who in the past would have become addicted to drugs, alcohol, girls or gambling. When you're in the hotel with the guys for a few hours before team dinner recovering from a 5 hour flight (which is every direction from home for the Canucks), 2 or 3 games as a squad doesn't sound too bad, especially when many preach team unity, it gives teammates another way to connect, especially as the style of game is inclusive to lots of different numbers of players and skill levels.
As for travel, the Canucks in particular have by far the worst travel schedule in the league and giving the players something to do while relaxing doesn't seem like the worst idea tbh. In 2011, the Canucks did more travel in the 2nd round than BOS did in their entire cup run. If the team plane has wifi, you can kill the daily 7 hour flight rather easily.
It's better for your nerves than sitting and staring at the wall before high pressure games.