Realisticly that just doesn't work. I'm 5'11 and swim a mile every day. I eat a very healthy diet. The lowest I can get to and maintain enough energy to work out is 188-90. (which is what I pretty much stay at) Most would consider me very lean. To get down to 170 I would have to get scrawny. I know what those USDA regs. say but they are crazy in the real world. To call a 5'll" 200 lb. person obese is delusional.
I know a good number of people who are about 170 and 5’11” that aren’t scrawny in the least. Not bulky by any means, but not scrawny for sure. I will admit college wrestlers aren’t a good test group, but the point remains. A lot depends on body type even if you are the same height. Some people get bulky others just kind of gain weight.
You are judging it from a simply weight/height perspective based on your habits. I am 6’4” and 195, by your standard I am skinny. I am not, I keep in good shape and you can not see any bone and I run 20-30k a week.
A person who doesn’t work out and weighs 30’bs over the frames suggested maximum is overweight. Your body should not carry any more weight than what is necessary to maintain your lifestyle.
BTW those aren’t USDA regs(CDC actually does it for the Gov’t, and the military has their own reg’s.). The very first h/w table was created by a life insurance company who studied over the long haul what a persons height weight should be. Universities have also done studies. THe biggest question really isn’t the height weight but the BMI to height/weight. If you are 5’11” in the army, weigh 200, and have a High BMI you are red flagged for being overweight. The military tends to offer a higher weight per height limit than most other charts because they realize the lifestyle in the military will require that.
So perhaps let’s use the Military’s table and say that a 5’11” man at the age of 28-39 shouldn’t weigh no more than 194lbs.