Should a password change/reset log you out remotely?

Yes - all devices will be logged out until the credentials are updated manually.

1. Does changing your password log you out of other devices?
2. What happens when you reset your password?
3. Will changing my YouTube password log everyone out?
4. Does Reset password mean change it?

Does changing your password log you out of other devices?

Yes, when you changed your password you will not be automatically logout on other devices. You can do it manually if you need to logout all devices.

What happens when you reset your password?

Reset password is the action of invalidating the current password for an account on a website, service, or device, and then creating a new one. A password may be reset using the settings of the software or service, or by contacting the customer service department.

Will changing my YouTube password log everyone out?

No,but it will ask you to login again in your google account and then all the app that you logged in before will be remains same as before in your system(or mobile). but your google account will be logged out from all other devices.

Does Reset password mean change it?

Difference between Password Reset and Password Change: –

Also, a Password Change requires that the user authenticate himself/herself by remembering the old password while Password Reset doesn't require the user to remember his/her Old Password.