Just example, I started playing at Betfury before they had any licenses... I tried them with some little amounts, they had fast deposit/withdrawals, daily payouts on time (pretty high in their beginning), and because I started earlier I had a chance to mine a lot of BFG's with some moderate wagering!
When we talk about legality, crypto itself is in some gray area, when we talk about crypto casinos it's a"wild west" (quoted someone here)!
You are 100% right iv4n! I am on Betfury since they did their bounty 2 years ago, so also gathered a nice amount of BFG thanks to that and had multiple small deposites/withdrawals with them before they acquired their license. A license helps but it is not because a casino is licensed that it is a legit casino.
so far, i haven't read any complaint or alarming warning signal towards betfury. so it means, they are doing their business fair and square. and if they are surviving til now, and it keeps on growing, then it means, they are doing something right. it won't expand if they are not generating income in this business. but as we have seen, they evolve and continuously growing their services. so i think, their bfg token is actually one of the casino tokens that are doing good today.