>It's strange that they are ending Windows 10 support so soon after they stopped selling it.
Windows Vista, Windows 7, Windows 8/8.1, Windows 10 - all of these had a published 10 year support lifecycle when they came out.
Windows 10's end of support is completely expected and as planned.
With Windows 11, they've moved it to a new lifecycle model, so it's less clear how long it will be supported for.