Google can totally explain why Chromium browsers quietly tell only its websites about your CPU, GPU usage: https://theregister.com/2024/07/12/chromium_api_system_information/

"…info about the processor you're using, so that whatever service is being provided – such as video-conferencing with Google Meet – could, for instance, be optimized and tweaked so that it doesn't overly tax your computer"
Why not always do that though? 🤔 Me having extra computing power doesn't mean that Google can waste it on whatever they deem fit!