This isn’t new, interesting or noval information. If you run whats app from the desktop app or from web.WhatsApp.com on you’re browser on a PC then no shit they know your on your PC
Why does it matter if the people I’m chatting with know if in onnmy PC?
I think there is an assumption that is rooted in how reddit worked, that votes are anonymous. People operating under that assumption might not like having that blanket ripped off. It would be different if it was up front from the start.