(Code run with ordinary non-superuser authority will be addressed further down.) Here's the long version: Still no. Any program on a Linux box, viruses included, can only do what the user who ran it can do. Real users aren't allowed to hurt the system (only a superuser account can...
The temperature and humidity sensors in the newHomePod, and now enabled in theHomePod mini, are designed to be used as part of automated systems. Right now, you can create a Shortcut that says if the indoor temperature falls below a certain point, you want your heater turned ...