It is possible to suspend Bitlocker. This works by writing the key somewhere on the disk. Then when you reenable it the key is removed again. This is necessary if you normally store the key in the TPM chip and you're going to do something that will break its trust, like updating the BIOS.
The recent update would suspend Bitlocker during the installation which is not a nice thing to do automatically.
It doesn't mean Microsoft has the keys though.
You can optionally store your FDE key on Apple's iCloud, but Apple makes it extremely clear what it is doing and offers to let you do so or not do so.
Right-o about using the built in FDE. It's kind of funny to think about how many lay users walk around thinking their laptop is safely protected by a password.
My girlfriend was shocked at how easily I was able to "hack" her laptop and reset the forgotten password by changing whatever accessibility.exe to cmd.exe.
A PC + "expensive Windows professional license" is still cheaper than a Mac.
This is not really relevant to the discussion, or even fully accurate. Most people who buy windows licenses (including me) buy one of the base licenses because we generally don't need the other "professional" features on our home computers.
If you use a Microsoft account, your key is automatically backed-up in Microsoft's cloud. Red flag #1.
Also, as the recent Bitlocker bypass "bug" showed us, Microsoft has some way of bypassing Bitlocker encryption when it performs updates on the system. I don't know if they have some kind of key escrow or what, but either way - red flag #2.
Of course, I'd say the bigger problem is that Microsoft doesn't even give the majority of Windows users the option to encrypt their computers, by restricting Bitlocker to expensive computers and Windows licenses, while every other operating system does. So the advice to "just use the built-in FDE" doesn't work for the majority of Windows users.