Is the turkey pop. in MN that bad to where you can only kill one turkey?
No, not really, especially since spring gobbler harvest has almost zero impact on populations, and there have been so many left over tags the past few years they have decided to go to unlimited OTC tags for the last few seasons. People here don't like change much and love to be regulated. Some were up in arms two years ago when MN DNR consolidated turkey zones from 40+ to 12. MN has always been a bit slow/conservative with their game laws.
As a result turkey hunting really isn't that big a deal in MN. Most people only get to hunt a max of 5 days a year and take one gobbler, so hardcore turkey hunters (in my mind people who identify themselves as turkey hunters first and foremost, as opposed to people who also hunt turkeys) are rare here compared to other states where people simply have more opportunity to hunt and improve their skills. The end result is a bunch of deer hunters who dabble in turkey hunting and will kill a turkey each spring the same way they deer hunt. They spend a week scouting out their stand location (blind) on some field or food plot, then sit there for 5 days and wait for a bird to walk by. The small group of dedicated turkey hunters in MN do a lot of traveling to other states. I do most of my hunting in WI. If it wasn't for the tradition I have of hunting in MN with friends I wouldn't even bother hunting here. My hunting areas in WI are closer, see less pressure, have more birds and more liberal seasons. Plus every tag after the 1st is cheaper in WI for a non-res than a resident tag in MN.