Garbage is probably improper wording.

Most likely, you are providing this functionality for developers. If so, why
do they need many different formats that they can put a dynamic string into?
The more you support, the more likely you are going to have errors.

If for users, you can format the string when it comes in. And, then you only
need to support one format.

One thing we developers often do is make a system so flexible, for the user
(dev or end user) that we end up making the system harder to maintain and
often harder to understand.

Looking back at my comment, I was a bit harsh on that one, as there may be a
legitimate reason for supporting all of the options. I still think that too
many options opens an application up for errors, much like scoping
variables/routines at too high a level.