(i trust there are the relevant permissions to share this clip)
Context is everything, and the referee’s words might be understood differently depending on what has gone in before.
The style is not for me as I am not comfortable threatening players generally. In detail I don’t think threatening red cards for everyone makes sense at all. But… just from this short clip there is some evidence that the players are respectful and the referee has control. So, if it works for him, fair enough.