My bank offers those. There are a few rules to what you can upload.

Some make sense, like you can't print the pin code or use the visa logo on a Mastercard.

Others are less obvious. Tiger King wouldn't be allowed because he's technically a celebrity, which is not allowed.

In this case it's a sticker, you can see the bulge where the numbers are. But as the other person already replied, some banks let you customize the card when ordering.

I heard on the subreddits and sometimes here about banks that will let you do that.
Though what I do not understand is if it covers the letters/numbers that are usually at the bottom front.

Some banks allow custom cards