Where you're from is irrelevant; this is the internet. That isn't an insult. "You're lack of knowledge" doesn't mean that the person being addressed is an idiot, just that thry aren't knowledgable in the subject at hand.
Maybe not, but it's certainly not a nice way of treating people and reflects poorly on the entire casino.
More importantly, Lutpin is wrong: Transactions that spend SegWit outputs are typically larger than equivalent non-SegWit transactions because they require additional space for the 0x marker. They only manage to get away with a lower fee rate because their weight is discounted.
So maybe some humility is in order.