For a time I lived in a single family house with a 1/2 acre in PA. It was part of a housing development and we were under a home owners by-law control. Before I purchased the home I was given a copy of the by-laws to read. There many things I noticed that I did not like but was willing to live with. I believed in balance the by-laws protected my home value by providing a consistent environment. We lived in that house from 1997 to 2005. It was new construction that I purchased at the time in 1997. In 2005 when I sold, it was considered one of the nicest neighborhoods in all of that area. My home value more than doubled in those 7 years which outpaced the area. It was a great looking neighborhood, lots of split rail fencing for back yards, lots of mature trees, well maintained homes and yards, great looking tool sheds in back yards. Really a great looking area that tried to maintain a semi rural look with traditional colonial style homes. Great looking common areas for the kids to play baseball, football, etc. Not over done and no yuppie feel/look. Just families trying to ensure their investment in a house paid off. It worked for me even know I did not like some of the by-laws. I did not have to buy there and yes, no flag poles, roof antennas, boat or campers on the front lawn. My goal was to protect my investment and be able to sell quick. It worked. My house sold on the first day at $30k over asking price, more than 2x what I purchased it for 7 years earlier.
My point, don't buy a place that’s under a home owners association if don't want to be told what to do in some areas of your life. In any case, this vet can likely ignore the association and get away with it because of all the hype. But unfortunately, he is in this predicament by his own making.