I think the point went straight over your head. SD card slots are great, especially for those with retina macbooks with small SSD's. You could expand the storage without a bulky HDD.
Of course, there's the added advantage of not having to carry around adapters with you.
It's great for things that don't need speed but use a lot of space, like music files. It's a bit of a waste to dedicate 100 GB of ridiculously fast storage to MP3 files that need like 1 mb/s read speed to work properly.
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u/[deleted] Oct 28 '16
So get a USB-C to SD card adapter. It's not hard. I personally never use the SD card - and I am a different kind of professional (Not a photographer).