Of course but, for the reasons I outlined, I don't see any reason to be concerned about hockey players locked in a bubble spreading infection throughout Edmonton.
As I said before, there's a better chance of you catching infection from a random person in public traveling from a nearby province.
Anyway, if you're worried then by all means...
I think the biggest concern is when players are in transit, especially when players fly into the hub city, or if there is exposure to workers/staff within the bubble who would then be going out into the community. For outings at a private golf course/movie theater as proposed in Edmonton's bid there ought to be no exposure to local persons.
The other thing is that people are supposed to follow the rules, however they don't always do that. There should be strict penalties for players/staff who don't adhere to the rules that are set up to keep teams within the bubble and the local population safe. I think if players got suspended for playoff games and players and teams both got fined for not adhering to safety protocols that would likely keep most people in line.
Once they're in the bubble though (assuming no players/staff are infected) it's much less of a concern like you said. However if somebody within the bubble catches the virus and then has to be treated at a local health facility then that adds to the burden of the local health system and provides a potential medium for community transmission. Having appropriate protocols that don't endanger the local population in these situations are imperative.
I'm also curious to see what the NHL's plan is for if a player or staff member does test positive. What testing will they be using and at what virus load do the tests indicate a positive for the virus? I personally know people in Edmonton and Calgary who were tested when they got sick and tested negative, then got tested again a few days later and tested positive. They could test players/staff they knew were exposed to a person who tested positive and get all negative tests and one or more of those people could have the virus and spread it while they are asymptomatic or presymptomatic. How do you play games when you may need to quarantine a whole team or two?
These are real concerns that need to be addressed.
PS - Also FWIW, I would be excited for Edmonton to be named a hub city assuming there were good safety measures in place. I'm not expecting the Oilers to be playing in Edmonton though.