No he is actually saying that why dont Directbet allow a parlay of the same bet, Directbet doesnt allow a parlay of the same event, means if you already make your bet of that match in parlay, you can reselect another bet for that match and put it in parlay, I bolded the important part to read
And why don't You take these bets?
In one ticketto write the various events which will happen in one game.
For example, one team will win and for example with a small account.
It is written in one ticket and the coefficients are multiplied.
Generally there are bookmakers that accept such bets?
Special bets and bets on the same event can not be parlayed due to potential correlation.
We can not look into each individual bet to determine if there is a correlation and therefore there is a global restriction where you can only parlay one bet from each game \ match or horse race. You can also parlay multiple Direct Dice and All-In Poker bets without restrictions.