As an illustration of number 4: When “upgrading” from on-site Sharepoint/Exchange to 365 it moves all group e-mail mailboxes to Teams accounts which makes it so group members can no longer send emails from that group’s address unless you restore the old method through a powershell command.

Not only that the user status is horribly inaccurate but too many people use it to decide if you are currently working or not.

They owned ‘iPhone’ specifically.

Fun fact: The iPhone name is owned by Cisco not Apple.