The amount of megapixels and bit depth modern professional cameras are offering is getting larger at ever increasing speed - think of 8K movie recording as an example. SD cards are foreseeable not capable of handling this huge amount of data in adequate time. That's why CFExpress was invented. If a have a MacBook PRO, I could also ask for a CFExpress card slot as well. So we have a SD card slot, a CFExpress card slot and maybe also it's successor on the Mac? This clearly looks terrible! If I would have the choice between any type of card slot and an additional Thunderbolt 4 port, I definitely would choose the TB4 port - no question. It's much more future-proof.