FWIW - The ASD ships with a TB3 cable as that is all that is needed. It's also very, very short. So you may end up buying a different one - just get a TB3 don't overpay for a TB4.
...not 100% sure, because this is made as clear as mud, but I think you
may need an
active TB3 cable for Thunderbolt 3 over more than 0.5m. One of the (few) differences between Thunderbolt 3 and 4 is the maximum
passive cable length for full (40Gbps) bandwidth increases from 0.5m to 2.0m, while Thunderbolt 3 was limited to 20Gbps for passive cables longer than 0.5m.
Reading between the lines on the dumbed-down description I'm guessing that Apple's "1.8m Thunderbolt 4 pro cables" are "active" which would be needed to support 40Gbps Thunderbolt
3 on a 1.8m cable. Also, at that price, presumably hand-woven under a full moon by 200 year old monks on the slopes of mount Fuji.
Don't you just love how simple Thunderbolt 3/4 and USB-C has made things? /s