How I eliminated devices from my Apple ID

Note: I initially was going to delete my apple id entirely, until I followed this process and saw that I'm using it on my Windows 11 device and three rokus.

1. Go into https://account.apple.com/account/manage
2. Click on devices
3. I found old devices, including an old iPad air with this serial number: DMPN8771FK10. I removed them.
4. I also found LENOVOWIN11, which I didn't remove
5. I found three Roku devices. I kept those and verified where they are by going into each tv settings-->system-->about
1. 4660X - Roku Ultra: The roku in my office
2. 3600RW - Roku Stick: Mike's Office Stick 
3. 3941X2 - Roku Express 4K+: The roku in the living room

Here's what I see now in my Apple account