What are some things that Linux can't do, but Windows can?

Depends how those are connected. But check out Home Assistant.

I've got home assistant running on a linux machine that lets me control/monitor my smart devices [0] from my mac, windows, linux, and android phone.

[0] list of smart devices:

• 5 Lifx lights (Full functionality)
• 1 Wemo device (toggles a dumb strip light i have around a mirror.)
• 3 Google home devices (the big, small, and medium speakers)
• 2 Android TV's (Nvidia Shields)
• Logs Temperature & humidity (full functionality and doesn't even require creating an account or using an app.)
• Roomba (full functionality)
• graphs my server's cpu, disk, ram, etc
• graphs firewall traffic.
• graphs minecraft server latency + player count.
• Integrates with my Unifi controller and two Wi-Fi access points.

Yes