URL is broken by space, meaning that you will not be redirected from the forum to the mixer, and since the post in scam board and its purpose not for advertisement, then there is no reason to delete it.
This varies from ShortURL which still redirected the required page from the forum.
If links to mixer directory sites that deal mostly with the topic of mixers are allowed, there is no reason not to allow the display of the mixer's name in the scam accusation. Especially if it is not a link and is not clickable.
The only way to unambiguously mention a mixer without a link is to add a space. In the scam accusation, it is very important to specify the correct domain, because it is not always the same as .io or .com, for example. I don't see a problem here.