It's not about RTwP vs TB per se (which I consider a rather silly and meaningless debate) but rather will TB make the game too long/too slow, as it does with the TB options for PoE2/PF:K for example. Which IMO is a reasonable question/concern.
And Divinity2 paces its encounters in far different way then PoE2 and especially PF:K. A lot of areas in those game consist of multiple encounters, often variation on the same enemy type (if you are lucky). Not so much in Divinity2 which will usually go for one big fight instead of a chain of them.
