I think that people who want to invest in these tokens, whatever it is, it is up to them in particular, I could not give advice depending on what a person wants, if they want to invest in a token, just because they like it, they are free to do it, if you want to invest in a token looking for profitability, you are also free to do so, but you have to bear in mind that when doing so you must wait as long as necessary, and this is decided by the btc market, because the btc it is the only crypto asset that has its own life and not another currency, when taking these things into account, it is necessary to know that the investor must be aware of how the crypto market moves, so that he knows what to expect.
Sometimes the decision to invest in token casino-based is because they also see more profits if the investor is actively playing in the casino but unfortunately investors not carefuly to check how the crypto market work that the token value can decline because comply to movement of the btc price that is the reference affects it like you said, so you have to ready with all possibilities may benefit from the casino but suffer losses due to a bearish market
With BFG as far as I know there are more users got who their token in investment thru the campaign they did. I'm not sure who profitable it is when the revenue is shared to the holders. But I would assume it is profitable since Betfury becomes popular.
What is to worry with casino token is that they are not listed on big major exchanges. I don't see it going there like it is innovative enough for the tech loving guys out there. This is the kind of token that will serve more for the team.