One day, as I observed the forums, it seemed to me that the general opinion was that Mr. Cawthon had 'milked', if you will, the series. With the copious amount of sequels and rumors of a film, the opinion was, to an extent, justified.
However, it seems to me that this is looked upon moreso than his other talents. Cawthon is a master of secrecy, the Baron of Stealth. Fellow user FredCat100 posits this, (http://freddy-fazbears-pizza.wikia.com/wiki/User_blog:FredCat100/Well_played,_Scott!) and I find it, if it is true, to be an excellent example -
In the trailer for Five Nights at Freddy's, Bonnie seems to be able to remove his mask. This seems to hint at Bonnie's lacking of a mask in the following game, Five Nights at Freddy's 2.
In Five Nights at Freddy's 2, the old Bonnie's seated position seems to resemble Spring-Trap's position in Five Nights at Freddy's 3.
He/she also posits that Spring-Trap's 'twisty' position hints at the possible 'Nightmare', in the soon-to-come Five Nights at Freddy's 4.
Along with this, his ability to cause people to speculate, theorize, and e-fight, if you will, is astounding. No more than an hour following the release of Five Nights at Freddy's 3, many were speculating over 'good' and 'bad' endings. From its humble start, when the question was 'Who was Golden Freddy', to now, when we inquire 'Who is Nightmare', it is obvious Mr. Cawthon enjoys observing us think.
Also, his ability to formulate a story-line is worthy of mention, as he is able to tightly string together a story-line that causes people, as I mentioned, to speculate and theorize profusely. I am led to the conclusion that his critics could not form such a grand, intertwining plot.
In short - hats off to Mr. Cawthon.