One big practical benefit of UUIDv7 is that it is hex, and simple substring extraction and from_hex functions, which are available pretty much everywhere, will

One big practical benefit of UUIDv7 is that it is hex, and simple substring extraction and from_hex functions, which are available pretty much everywhere, will be able to extract the timestamp portion from the high bits. Having had to massage lots of data with base62 and other weirdnesses, this lowest common denominator approach is a really big selling point. People often bikeshed about shaving a few bytes off the ID or something, but in most applications this is not very important and data storage formats are usually compressed so costs are about entropy not alphabet.