Documentation issue with blob block id naming

[Mardoxx]

Can't find this on MS docs repo to submit PR..

https://docs.microsoft.com/en-us/rest/api/storageservices/understanding-block-blobs--append-blobs--and-page-blobs

Block IDs are strings of equal length within a blob. Block client code usually uses base-64 encoding to normalize strings into equal lengths. When using base-64 encoding, the pre-encoded string must be 64 bytes or less. Block ID values can be duplicated in different blobs. A blob can have up to 100,000 uncommitted blocks, but their total size cannot exceed 200,000 MB.

What does it mean by Block client code usually uses base-64 encoding to normalize strings into equal lengths? Sounds completely wrong to me!

I thought blockIds had to be Base64 encoded strings of equal length strings per block blob (of a max length of 64 bytes before encoding)!