Probably because it is quite an overstatement. There are situations where it is clearly useful be in an HOA.

For example last time I was looking for a house I looked at one where the water supply for that house and three others came from a private well. It was the best house I'd seen so far, but I couldn't find any binding agreement on how well maintenance would be paid for so I passed.

An HOA for those four houses specifically to cover operation and maintenance of the well would have been a very good thing to have.