I like the fact that you tied the Watson api and the Telegram api together in a simple app, but it's a bit far-fetched to claim that "building intelligent bots is not too hard" based on this example.
thanks for the feedback. totally understand your point. i think the biggest problem is that the commenters here have a different understanding of the ambiguous term chatbot. the expectation is that AI or intelligent chatbot means it would pass the turing test and you would not notice if you are talking to a bot or human. but this is not the point.
everyone who has experience in natural language processing or computer vision could tell you about various sub-problems of AI which are all about equally hard. imagine you would have tried to build a similar program with the same outcome 10 years ago. you would probably be still working on it. today, you can build such a thing in one hour because multiple thousand hours of work went into the API and you can focus on the glue code. this makes it "easy" or "not too hard". AI becomes more and more available as a service and everyone can make use of it that's the whole idea