Keeping an ineffective injured player around that was clearly a detriment to the team is bad football. Most teams don’t keep a player like that around.
I can't speak to the reason why they made the decisions they did in regards to Jones.
I know that being a punter and kicker being expected to perform with those injuries is way too much to ask, and the brain trust who thought that trotting out an injured Jones instead of a healthy journeyman punter was going to be good for the field position game needs to have their head examined.
Punting is a violent motion on the leg and torso albeit a simple move. If you can't kick to the a league standard, and we aren't talking Shane Lechler or Reggie Roby standard, but just a league average you need to get another punter.
Jones was not able to kick to an average standard, and his hernia was an obvious reason.
Just deal with the salary cap issue of having two punters on the payroll and move on.