There are really a lot of exchanges nowadays, but most of them are cannot be trusted and they have fake volumes, that is why many crypto users are so picky in finding some exchange.
The numbers of exchange do not matter to me and what is important is how good there are. The issues of fakes volumes is there and I think that means some of the exchange are just there for the purpose of manipulations. We just need to get more of them because competition bring professionalism.
Quality over quantity, but honestly, we can never stopped the increase of number of exchanges in crypto.
As the number of investors increases, that calls for an increase of exchanges also, capitalist seems potential in the market, so they will try to operate.