I'm no expert on this but I've been looking into it over the last couple of days and here's my guess --
1. It certainly doesn't help.
2. It could mean it's harder to find available shots.
3. The "high risk" categories are broad enough that anyone who wants a shot should still be able to get one. But you'll probably have to pay out of pocket for it.
This is my assessment as well. If you go to a pharmacy they won’t have any problem giving it to you, but insurances will likely look to restrict reimbursement for those within the new recommendations.