Yes, it makes sense.With recup on, whenever you take the foot off the go pedal, the car WILL slow down. If you wanted the car to slow down anyway, then recup is not losing you anything. However, if you slow down any more than you wanted, then you are expending more energy to get back up to speed than if you had not recuped in the first place, and instead had coasted.
Does that make sense?
PS Range mode turns off recup by default, which tells you something about what Porsche thinks is most efficient.
Another thing I think I learned - from reading the owner's manual - is that apparently switching recup (off, on, auto) controls what Porsche calls the overrun recuperation which starts when accelerator is released, as opposed to the braking recuperation. Not having a Taycan yet, I'm assuming from that manual language that braking recuperation is always active.
Thanks again for the info.