I'm keen to know what the general consensus is on the value and utility of all the tokens that exchanges and crypto portals release.
Cryptocurrency is a broad venture and no consensus is needed for a token to be created on listed on an exchange, what the token team need is to have the exchange requirement and their token will be listed.
Are there too many of them in the market?
Yes, there are in spite that crypto market is broad and new token project are abusing the capacity of the market.
Or is there an obvious market need that such tokens serve?
The market needs the service offered by some token but 95% of all the token we have in the market are copycat.