Trust me, we’re aware of the irony.
We’ve been spending most of our time calming down the folks who don’t have the “right” Apple product to use the desktop app.
It is odd, yes. However, I can make a guess there’s likely far more to the story than just not shipping to Windows yet. For starters, there’s Microsoft Copilot, which uses GPT-4.
Second, and this is just my personal speculation (with no evidence), they may be planning something with Windows on ARM. It’s unlikely, but possible considering they developed this for Apple Silicon first. They may be focusing on developing the desktop app for chips that have a sufficient NPU.