The choice of the programming language for a certain product depends on many factors. This is the language capabilities, performance and the cost of development, simplicity of product maintenance. The customers and the programmers themselves would like to use the best and most popular solutions. But there is no direct dependence that the most popular language will be the best language for the product you are developing.
The rating reflects the popularity of the language in terms of the number of queries in the search engines and gives a general overview of how often Internet users are interested in one or another programming language, and how the interest in dropping or growing.