the issue is that Wilson was the backup.Did the Jets ever sign a Vet to back up Wilson, what if he gets taken out this week or next week or the Sunday after that?
my guess is they will indeed sign somebody fairly quickly. they need to move quickly because it typically takes a good 2-3 weeks for a QB to learn enough of the playbook to be even remotely useful.
even then, you are likely running a stripped down version of the offense with a handful of special plays that the QB will be forced to learn (likely matchup dependant)