Just a note that the link to your user/talk/contributions page can be invisible, and this works fine and is accepted. Maybe this can be added to the main text. See my signature here, which visibly only links to my home wiki, but contains an invisible link to my local user page to satisfy the needs of MediaWiki: – gpvos (talk) 16:38, 2 February 2024 (UTC)
Topic on Talk:New requirements for user signatures
We have an essay on the English Wikipedia called en:Wikipedia:Don't stuff beans up your nose that covers potential instructions like this. I do not think that putting information like this on the page would be helpful.
I agree that this is a bug rather than a feature, and as such, it shouldn’t be documented as a feature. I’m not sure if it can reasonably be fixed, but at least we shouldn’t advertise it.
A similar method has been mentioned on nl:Wikipedia:Gepersonaliseerde handtekening since August 2020. The recommendation there is to use [[User:YourName|‍]]. So there is at least one more editor who doesn't consider this to be stuffing beans up one's nose. – gpvos (talk) 12:10, 29 February 2024 (UTC)