You can bet that your home automation software (e.g. Home Assistant) is spying on you. There are some alternatives.
OpenHAB is notably a software package as opposed to a full OS, so unless it is installed as an image on a Raspberry Pi, it must be installed as a package on a chosen operating system, or as a Docker container on an existing platform that runs Docker.
Home assistant is notably its own Linux-based OS called HA OS in addition to being packaged software on many plaforms - this means that it can (very conveniently) be installed as an image on many hardware platforms like Raspberry Pi or standard 64-bit PC hardware.