as for me there is no any difference what kind of cryptocurrency you use for gambling. yes, BTC costs a lot but also your rewards will be in BTC.
If you tink btc costs a lot of you then you can set it to bits, satoshi or mbtc in this way it will turn into lower value though all are same but unit will be less then bitcoinI mean they are smaller units.
He was probably mentioning about the transaction fee for Bitcoin. A few weeks back, the average cost of transaction used to be somewhere between $0.10 and $0.30. Now this has gone up by almost 10 times, to $3.00 per transaction. And in case the bull run continues for the next couple of months, then we can expect the fee to touch $10.00 per transaction.
Yes, it is right that transaction fee is increasing too much day by day with the rising price of bitcoin though the price of bitcoin and transaction fee are not increasing on same way. Earlier it was about on average 0.2$ now it could be 0.4 but it is too much for now excepted few from where fee can select manually but those got confirmed too slow.