Well, the patch notes say:
A new warning popup will appear for players at the character selection screen.
This new popup is only temporary and will later on be included in the General Rules popup appearing when launching the game.
People dont know when "later on" will happen and even if it will happen or if it will be one of those things that fell by wayside. Still, this is meant to be a temporary popup and the better time to complain that it is still there and not removed would be couple patches from now.