By "this tool" do you just mean the Pluton system in general or some specific thing? The attestation stuff is a software feature that would be disabled by booting another OS that doesn't support it. It needs the Pluton hardware to be possible, but the software side is in the OS not hardcoded on the chip.

Disabling other operating systems would be done by the BIOS if manufacturers locked down the configuration of existing secure boot functionality, doesn't need any new features.