My Lexar 256GB cards have worked in every one of the six other card readers I have used over the past year—never a problem.
So much for a USB-C solution.
The SanDisk USB-C reader is badly designed anyway; it sticks far out of the machine so in crampled quarters there is no room to insert it. Also, the card is difficult to remove because of the projecting lip on it. One has to pinch the card to try to extract it, very hard to do with cold fingers.
One positive that compensates in part for having to carry a separate card reader and adapter versus built-in: the Lexar card reader I use with the USB-C to USB-A adapter copies from the card about 3X faster than the built-in SD slot of the 2013 MacBook Pro.
* The necessity for which is rationalized away by an Apple executive ignorant or willfully in denial of reality.