Since the bottom of an article is usually the least visible, I'll paste this here to make it more visible:

“The Copilot Discord channel has recently been targeted by spammers attempting to disrupt and overwhelm the space with harmful content not related to Copilot. Initially, this spam consisted of walls of text, so we added temporary filters for select terms to slow this activity. We have since made the decision to temporarily lock down the server while we work to implement stronger safeguards to protect users from this harmful spam and help ensure the server remains a safe, usable space for the community,” a Microsoft spokesperson told Windows Latest.

Microsoft added that blocking terms such as “Microslop,” along with other phrases in the spam campaign, was not intended as a permanent policy but a short-term mitigation while the company manages to put additional protections in place.

Whether it's true or not that the policy was temporary, I guess we'll see.