My advice is to keep to simple text formatting whenever possible.
As noted above, Teams meetings personal, not channel are first.
Unsolicited bulk mail or bulk advertising.
I especially appreciated your explanation rationalization? Threats include any threat of suicide, violence, or harm to another.
Be aware, though, that tagging is commonly associated with a call to action and can seem bossy if not used with discretion.
If you switch from chats to do other work or leave the device for a while, you will need to refresh the content of a live component when you return.