Virtually any token outside of the top 100 by market cap could be said to be an "unattractive offering." The way I see it, the FUN token is speculative in the way that many low-cap tokens and even penny stocks are speculative - a degen play as they say. I agree that there is an element of faith that Freebitco.in will continue to act in good faith when you use or accumulate the token. It seems the token should be viewed as largely an in-house rewards program, with a bet on the token largely a bet on the goodwill of the site.
FUN token got lucky for managing to list on Binance during the early days of exchange because right now no casino tokens being listed in there.
FUN token still retain its value because of this listing on top tier exchange while they still have some use case on different gaming projects.
Without Binance listing, I believe this token will suffer same fate with other casino tokens that is no on low marketcap.
I believe that the FUN Token was only listed on Binance because at that time the token was not yet linked to any gambling site, but if this token had not been listed, I am sure that today Binance would not list it. This only shows that Binance does not list casino tokens due to some kind of legal obstacle that they do not talk about, because it does not make sense for them to list many useless shitcoins, but they do not list good casino tokens like the Rolbit token if I am not mistaken.