I worked for a multinational company before I retired. Our standard date format was DDMMMYYYY (i.e.: 04MAR2018). We got used to it, but even that had its problems.
I'm sure Mark is cognizant of everyone's biases and -- if it's implemented at all -- will be done in a manner that minimizes the rockage of anybody's world.
"If you have always done it that way, it is probably wrong."? -- Charles Kettering
Bruce