Are developers purposely releasing bad DLC?

Remember those simpler days when you would ride your bike down to the store to spend your hard earned money on a new game you fancied, and you actually got what you paid for? Well times change. Nowadays many gaming experiences are segmented and muddled by day one DLC and exclusive pre-order bonuses. A lot of the content in these packages could have been in the original game, but as technology advances the cost to make games increases and developers take drastic measures keep their income up. This has become the norm as of late and many developers fallen into this trap which may very well hurt the entire industry.