Additional meeting and call-related features and issues within Microsoft Teams for business
It's also erratic, if there's 4 or more people, it auto-mutes. That great, an inconsistent experience. It's still a level of overhead placed on the user. It may seem like this is a silly concern, but when your jumping from one meeting to the next it's just another thing to track; it presents a pitfall for user error. They may even accidently unmute themselves if they aren't paying attention.
These are all issues fully alleviated by just providing an option to always be muted when joining a meeting.