I dont think FUN caused them any harm or caused some negative for its existence, the risk is taken by buyers surely and like most things it scales; unless the cost to setup that up was so expensive; it produced the interest and traffic is justify itself at least from the company perspective imo.
I think that integrating fun tokens on the freebitcoin website was a mistake and a short-sighted decision. The freebitcoin team has likely had more negative than positive experiences with fun tokens, considering that the fun token price has depreciated significantly since its integration.