Clubs aren't going to tolerate this as we get closer to the season. Whole position groups shut out. Remember the nightmare Bronco situation. Will players who opt out of vaccination get game checks if they miss games due to a positive test?
Already the NHL has loosened in person protocols for teams with at least 85 % vaccination (or maybe higher) for teams and staffs.
NFL may adopt this too. A team that vaccinates its players will have a competitive advantage. The league is NOT going to go back to 2020 rules and protocols.