I don't understand why would you ever change what is clearly written in dnd rules unless it's difficult to implement in a videogame format - in this case it's totally understandable to change/not implement something. But there is nothing difficult in implementing the shove as the dnd shove. Action and 5 ft/prone.

Is it that they want to tweak things for the sake of tweaking and "making it their own way"? Just why. I want Larian dnd game, not Larian Larian-dnd game. Just why.

And to top all of it the current implementation is not just not in the spirit of the system but also plain bad. Let's also make a poke bonus action to poke eyes and permanently blind creatures with eyes by the way.