No, simply making a programming language does not make the field worse. It can only make it better. But if the question was rephrased "are there too many languages to learn in order to be competitive in the job market", than maybe. Competing standards is just a truth about this field and many other industries. Rust and Go, Typescript and Dart, Python and Ruby, Java and C#, etc. It is unknown which language will be more relevant in 20 years, so it's best to learn as many as you can. It's an easier task than it might sound.

No, and it's not a bad thing either. Each one has strengths and weaknesses. You need constant innovation in different languages in order to evolve the art of programming.

What I think would be important is really determining what each language is essential for, and sticking to that. When it all goes to hell is when a language comes out with ways to try to outsmart the other, then confusion kicks in, and we have questions like this that show up on HN. An example would be when a language is not really object oriented, but is kind of object-oriented...

No. In fact I don’t even think we’ve really got started

Software development is in its infancy and has a long way to go. New languages are in important part of that.

Is good having many different program language for different purpose, as well as for different prefence because you might have different opinion to me. You do not have to use all of them!

Nope, not enough.

Too many for what? I don't understand the scope of your question.

What would be the difference between “enough” and “too many”?

No.