That's basically rubbish and misinformation.

You're complaining about WDM audio. There's built in WaveRT and external ASIO stacks as well. The latter has become the standard on Windows for professional audio and is direct hardware access.

USB audio devices are and aren't polled. The cheap ass speakers and stuff are but anything $20+ are buffered raw device access.

I can get 8ms out of a Windows 7 laptop with ASIO over USB that isn't even tuned. My Korg Triton Studio manages about 4ms and that's seriously high end kit.