Yes, the more exchanges to trade tokens, the more popular the project becomes. An increase in supporters will lead to an increase in demand for the project.
This is the wrong logic. 20 small and unnecessary exchanges can not be compared with one big exchange with huge daily trading volume.
You have a point, probably this platform wanted to try something and willing to take the risk. Maybe, due to thousands of competition, programmers wanted to innovate things just to have some difference because we know that people are very curious and always wanted to explore things.