Is this User-Agent safe and useful in Mullvad Browser?

Has anyone used the below User-Agent Switcher extension with Mullvad Browser? (seems like only this extension does not collect use data)

Does it actually improve privacy, or could changing the user agent make my browser fingerprint more unique and reduce anonymity? I’m also wondering whether it’s reliable, actively maintained, and unlikely to interfere with Mullvad Browser’s built-in privacy protections or break websites.

Would it be better to leave the default user agent unchanged?

Do you use any other user-agent with Mullvad Browser?

Modifying a user agent will make your more unique which is counter intuitive. You should not install any add-ons in Mullvad Browser.

While this is generally true, not everything has to be avoided. There was also talk about having a list of “safe” extensions to use.

If it did, it would be included by default.

Since it doesn’t, it isn’t.